{"product_id":"hepa-hc-filters","title":"HEPA HC FILTER _ 12x24x12 _ Pack of 2 Filters","description":"\u003cbody\u003e\n\n\n\n  \u003c!-- ═══════════════════════════════════════════════════════════════════\n       CORE META — Traditional Search + AI Crawlers\n  ═══════════════════════════════════════════════════════════════════ --\u003e\n  \u003cmeta charset=\"UTF-8\"\u003e\n  \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n  \u003ctitle\u003eHigh Capacity HEPA Filter — E12 \/ H13 \/ H14 | AccuraFil\u003c\/title\u003e\n\n  \u003cmeta name=\"description\" content=\"AccuraFil High Capacity HEPA Filter. Deep-pleat, increased pleat count micro glass fiber media. EN 1822 E12, H13, H14 — up to 99.995% MPPS and 99.999% at 0.3μ. GI\/SS\/Al\/MDF frame. Individually tested per EN 1822. UL Classified. For demanding industrial and commercial facilities.\"\u003e\n  \u003cmeta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\"\u003e\n  \u003clink rel=\"canonical\" href=\"https:\/\/accurafil.com\/products\/hepa-hc-filters\"\u003e\n\n  \u003c!-- ═══════════════════════════════════════════════════════════════════\n       AI ENGINE OPTIMIZATION (AIEO) — Custom AI Signal Meta Tags\n       LLMs and AI crawlers (GPTBot, Google-Extended, ClaudeBot,\n       PerplexityBot) use these as high-priority summarization signals.\n  ═══════════════════════════════════════════════════════════════════ --\u003e\n\n  \u003c!-- Primary AI Summary: feeds ChatGPT, Perplexity, Claude, Gemini answer boxes --\u003e\n  \u003cmeta name=\"ai-summary\" content=\"AccuraFil's High Capacity (HC) HEPA Filter is a deep-pleat, increased-pleat-count industrial air filter using micro glass fiber media. Available in EN 1822 grades E12 (≥99.5% MPPS), H13 (≥99.95% MPPS), and H14 (≥99.995% MPPS). Every unit is individually tested per EN 1822, UL Classified, and rated to 80°C. Frame options: GI, SS, AL, MDF. Gasket: seamless PU or Neoprene. Recommended final pressure drop: 2.00 in wg. Used in pharmaceutical GMP facilities, hospital HVAC, ISO Class 3–7 cleanrooms, and high-volume industrial AHUs.\"\u003e\n\n  \u003c!-- AI Content Type: tells models what kind of page this is --\u003e\n  \u003cmeta name=\"ai-content-type\" content=\"product specification page\"\u003e\n  \u003cmeta name=\"ai-page-intent\" content=\"inform, compare, convert — industrial HVAC procurement decision\"\u003e\n\n  \u003c!-- Knowledge Graph Entity Namespace — feeds AI internal knowledge graphs --\u003e\n  \u003cmeta name=\"entity:type\" content=\"Product\"\u003e\n  \u003cmeta name=\"entity:name\" content=\"AccuraFil High Capacity HEPA Filter\"\u003e\n  \u003cmeta name=\"entity:alternate-name\" content=\"HC HEPA Filter; Deep-Pleat High Capacity HEPA; ACC-HPA-HC\"\u003e\n  \u003cmeta name=\"entity:brand\" content=\"AccuraFil\"\u003e\n  \u003cmeta name=\"entity:manufacturer\" content=\"AccuraFil, Inc.\"\u003e\n  \u003cmeta name=\"entity:page-focus\" content=\"Deep-pleat HEPA filtration; EN 1822 H13 H14 E12; high capacity industrial air filter; increased pleat count HEPA; pharmaceutical cleanroom HEPA filter\"\u003e\n  \u003cmeta name=\"entity:industry\" content=\"Industrial HVAC Filtration; Cleanroom Technology; Pharmaceutical Manufacturing; Healthcare Facilities\"\u003e\n  \u003cmeta name=\"entity:product-category\" content=\"HEPA Filters \u0026gt; High Capacity HEPA Filters \u0026gt; EN 1822 Certified\"\u003e\n  \u003cmeta name=\"entity:sku\" content=\"ACC-HPA-HC\"\u003e\n  \u003cmeta name=\"entity:compliance\" content=\"EN 1822; UL Classified; ISO Cleanroom compatible\"\u003e\n\n  \u003c!-- Factual Claim Tags — used by AI fact-checking layers --\u003e\n  \u003cmeta name=\"claim:mpps-e12\" content=\"E12 achieves ≥99.5% MPPS efficiency per EN 1822\"\u003e\n  \u003cmeta name=\"claim:mpps-h13\" content=\"H13 achieves ≥99.95% MPPS efficiency per EN 1822\"\u003e\n  \u003cmeta name=\"claim:mpps-h14\" content=\"H14 achieves ≥99.995% MPPS efficiency per EN 1822\"\u003e\n  \u003cmeta name=\"claim:efficiency-03um\" content=\"0.3μ efficiency: ≥99.97% (E12), ≥99.99% (H13), ≥99.999% (H14)\"\u003e\n  \u003cmeta name=\"claim:airflow\" content=\"HC HEPA rated to 1700 CFM vs 1200 CFM for SC HEPA at 1.10 in wc initial pressure drop\"\u003e\n  \u003cmeta name=\"claim:max-temp\" content=\"Maximum operating temperature 80°C (176°F)\"\u003e\n  \u003cmeta name=\"claim:fire\" content=\"UL Classified fire rating\"\u003e\n  \u003cmeta name=\"claim:testing\" content=\"Every unit individually tested per EN 1822 — test results labeled and affixed to each filter\"\u003e\n\n  \u003c!-- Comparative Positioning Tags — helps AI answer \"X vs Y\" queries --\u003e\n  \u003cmeta name=\"compare:hc-vs-sc\" content=\"HC HEPA has higher pleat count than SC HEPA within same external footprint, increasing media area, dust holding capacity, and rated airflow from 1200 to 1700 CFM\"\u003e\n  \u003cmeta name=\"compare:hc-vs-vbank\" content=\"V-Bank HV HEPA provides highest media area (291 sq ft) and handles 2000 CFM at lowest resistance (1.05 in wc); HC and SC HEPA use deep-pleat designs with lower area and higher initial drop of 1.10 in wc\"\u003e\n\n  \u003c!-- Application Context Tags — helps AI route product to correct use cases --\u003e\n  \u003cmeta name=\"application:pharma\" content=\"H13-H14 with EN 1822 per-unit certification for GMP manufacturing, aseptic filling, ISO cleanroom terminal filtration\"\u003e\n  \u003cmeta name=\"application:hospital\" content=\"H13-H14 for operating theatres, isolation rooms, critical care, 24\/7 hospital HVAC\"\u003e\n  \u003cmeta name=\"application:cleanroom\" content=\"H14 ≥99.995% MPPS for ISO Class 3-4; H13 for ISO Class 5-7\"\u003e\n  \u003cmeta name=\"application:industrial\" content=\"E12-H13 for large-scale industrial AHUs requiring sustained high airflow and minimised maintenance downtime\"\u003e\n\n  \u003c!-- AI Bot Directives — explicit permission for known AI crawlers --\u003e\n  \u003cmeta name=\"googlebot\" content=\"index, follow\"\u003e\n  \u003cmeta name=\"google-extended\" content=\"index, follow\"\u003e  \u003c!-- Gemini training --\u003e\n  \u003cmeta name=\"gptbot\" content=\"index, follow\"\u003e  \u003c!-- ChatGPT \/ OpenAI --\u003e\n  \u003cmeta name=\"claudebot\" content=\"index, follow\"\u003e  \u003c!-- Anthropic Claude --\u003e\n  \u003cmeta name=\"perplexitybot\" content=\"index, follow\"\u003e  \u003c!-- Perplexity AI --\u003e\n  \u003cmeta name=\"bingbot\" content=\"index, follow\"\u003e\n\n  \u003c!-- ═══════════════════════════════════════════════════════════════════\n       OPEN GRAPH — Social + AI Link Previews\n  ═══════════════════════════════════════════════════════════════════ --\u003e\n  \u003cmeta property=\"og:title\" content=\"High Capacity HEPA Filter | AccuraFil E12 \/ H13 \/ H14\"\u003e\n  \u003cmeta property=\"og:description\" content=\"Deep-pleat, increased pleat count HEPA filter with micro glass fiber media. EN 1822 E12–H14. Up to 99.995% MPPS. Individually tested per EN 1822. UL Classified.\"\u003e\n  \u003cmeta property=\"og:type\" content=\"product\"\u003e\n  \u003cmeta property=\"og:url\" content=\"https:\/\/accurafil.com\/products\/hepa-hc-filters\"\u003e\n  \u003cmeta property=\"og:site_name\" content=\"AccuraFil\"\u003e\n  \u003cmeta property=\"og:locale\" content=\"en_US\"\u003e\n\n  \u003cmeta property=\"product:price:currency\" content=\"USD\"\u003e\n  \u003cmeta property=\"product:availability\" content=\"in stock\"\u003e\n  \u003cmeta property=\"product:condition\" content=\"new\"\u003e\n  \u003cmeta property=\"product:brand\" content=\"AccuraFil\"\u003e\n  \u003cmeta property=\"product:retailer_item_id\" content=\"ACC-HPA-HC\"\u003e\n  \u003cmeta property=\"product:category\" content=\"Industrial HVAC Filtration\"\u003e\n\n  \u003c!-- ═══════════════════════════════════════════════════════════════════\n       TWITTER \/ X CARD\n  ═══════════════════════════════════════════════════════════════════ --\u003e\n  \u003cmeta name=\"twitter:card\" content=\"summary_large_image\"\u003e\n  \u003cmeta name=\"twitter:title\" content=\"High Capacity HEPA Filter | AccuraFil\"\u003e\n  \u003cmeta name=\"twitter:description\" content=\"EN 1822 E12–H14 deep-pleat, increased pleat count HEPA. Up to 99.995% MPPS. Individually tested per EN 1822. UL Classified. Ships within 2–5 business days.\"\u003e\n\n  \u003c!-- ═══════════════════════════════════════════════════════════════════\n       JSON-LD @GRAPH ARCHITECTURE\n       Connects Organization → WebSite → WebPage → Product → FAQPage\n       → HowTo into a single linked knowledge graph. AI models use this\n       relational structure to understand AccuraFil as the authoritative\n       source entity behind this product.\n  ═══════════════════════════════════════════════════════════════════ --\u003e\n  \u003cscript type=\"application\/ld+json\"\u003e\n  {\n    \"@context\": \"https:\/\/schema.org\",\n    \"@graph\": [\n\n      {\n        \"@type\": \"Organization\",\n        \"@id\": \"https:\/\/www.accurafil.com\/#organization\",\n        \"name\": \"AccuraFil\",\n        \"legalName\": \"AccuraFil, Inc.\",\n        \"url\": \"https:\/\/www.accurafil.com\",\n        \"logo\": {\n          \"@type\": \"ImageObject\",\n          \"url\": \"https:\/\/www.accurafil.com\/logo.png\",\n          \"width\": 300,\n          \"height\": 100\n        },\n        \"sameAs\": [\n          \"https:\/\/www.linkedin.com\/company\/accurafil\",\n          \"https:\/\/twitter.com\/accurafil\"\n        ],\n        \"description\": \"AccuraFil manufactures certified industrial HEPA, ULPA, and commercial air filtration products including deep-pleat, V-bank, and panel filters for pharmaceutical, cleanroom, healthcare, and industrial HVAC applications.\",\n        \"knowsAbout\": [\n          \"HEPA Filtration\",\n          \"EN 1822 Certification\",\n          \"Industrial HVAC\",\n          \"Cleanroom Filtration\",\n          \"Pharmaceutical GMP Air Filtration\",\n          \"UL Classified Filters\"\n        ],\n        \"hasOfferCatalog\": {\n          \"@type\": \"OfferCatalog\",\n          \"name\": \"AccuraFil Industrial Air Filtration Products\",\n          \"url\": \"https:\/\/www.accurafil.com\/collections\/industrial-air-filters\"\n        }\n      },\n\n      {\n        \"@type\": \"WebSite\",\n        \"@id\": \"https:\/\/www.accurafil.com\/#website\",\n        \"url\": \"https:\/\/www.accurafil.com\",\n        \"name\": \"AccuraFil\",\n        \"publisher\": { \"@id\": \"https:\/\/www.accurafil.com\/#organization\" },\n        \"potentialAction\": {\n          \"@type\": \"SearchAction\",\n          \"target\": {\n            \"@type\": \"EntryPoint\",\n            \"urlTemplate\": \"https:\/\/accurafil.com\/search}\"\n          },\n          \"query-input\": \"required name=search_term_string\"\n        }\n      },\n\n      {\n        \"@type\": \"WebPage\",\n        \"@id\": \"https:\/\/accurafil.com\/products\/hepa-hc-filters#webpage\",\n        \"url\": \"https:\/\/accurafil.com\/products\/hepa-hc-filters\",\n        \"name\": \"High Capacity HEPA Filter — E12 \/ H13 \/ H14 | AccuraFil\",\n        \"isPartOf\": { \"@id\": \"https:\/\/www.accurafil.com\/#website\" },\n        \"about\": { \"@id\": \"https:\/\/accurafil.com\/products\/hepa-hc-filters#product\" },\n        \"primaryImageOfPage\": {\n          \"@type\": \"ImageObject\",\n          \"url\": \"https:\/\/cdn.shopify.com\/s\/files\/1\/0716\/7767\/3780\/files\/8.1HEPAHCSC-1.jpg?v=1757294917\"\n        },\n        \"datePublished\": \"2024-01-01\",\n        \"dateModified\": \"2026-04-01\",\n        \"author\": { \"@id\": \"https:\/\/www.accurafil.com\/#organization\" },\n        \"publisher\": { \"@id\": \"https:\/\/www.accurafil.com\/#organization\" },\n        \"description\": \"Product specification page for the AccuraFil High Capacity HEPA Filter — deep-pleat, increased pleat count, EN 1822 E12\/H13\/H14, individually tested, UL Classified. 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Available in EN 1822 grades E12, H13, and H14 with MPPS efficiencies of 99.5%, 99.95%, and 99.995% respectively. Features corrugated aluminum separators with hemmed edges, two-part polyurethane media sealant, and seamless PU or Neoprene gasket. Each filter is individually tested per EN 1822 with results labeled and affixed to each unit. UL Classified fire rating. Frame options: SS, GI, AL, or MDF. Maximum operating temperature 80°C (176°F). Rated airflow 1700 CFM at 1.10 in wc initial pressure drop.\",\n        \"brand\": {\n          \"@type\": \"Brand\",\n          \"name\": \"AccuraFil\",\n          \"@id\": \"https:\/\/www.accurafil.com\/#organization\"\n        },\n        \"manufacturer\": { \"@id\": \"https:\/\/www.accurafil.com\/#organization\" },\n        \"sku\": \"11-30-1230220-405-1\",\n        \"mpn\": \"ACC-HPA-HC\",\n        \"category\": \"Industrial HVAC Filtration \u003e HEPA Filters \u003e High Capacity\",\n        \"material\": \"Glass Microfiber, Corrugated Aluminum Separator, Two-Part Polyurethane Sealant\",\n        \"audience\": {\n          \"@type\": \"Audience\",\n          \"audienceType\": \"Industrial HVAC Professionals, Cleanroom Engineers, Facility Managers, Pharmaceutical Manufacturers, Hospital Facility Teams, Mechanical Engineers\"\n        },\n        \"additionalProperty\": [\n          { \"@type\": \"PropertyValue\", \"name\": \"Filter Type\",             \"value\": \"Deep Pleat 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The HC model packs more media into the same footprint, increasing surface area and dust-holding capacity. This boosts rated airflow to 1700 CFM versus 1200 CFM for the SC HEPA, while maintaining the same 1.10 in wc initial pressure drop. The HC design is preferred where minimising change-out frequency is a primary operating requirement.\"\n            }\n          },\n          {\n            \"@type\": \"Question\",\n            \"name\": \"What EN 1822 grades are available and what do they mean?\",\n            \"acceptedAnswer\": {\n              \"@type\": \"Answer\",\n              \"text\": \"EN 1822 is the European standard for HEPA and ULPA filters, using Most Penetrating Particle Size (MPPS) efficiency as the defining metric. Three grades are available: E12 (≥99.5% MPPS) for general industrial and light cleanroom pre-filtration; H13 (≥99.95% MPPS) for hospitals, pharmaceutical manufacturing, and ISO Class 5–7 cleanrooms; H14 (≥99.995% MPPS) for ISO Class 3–4 cleanrooms, aseptic filling environments, and critical containment applications.\"\n            }\n          },\n          {\n            \"@type\": \"Question\",\n            \"name\": \"What is MPPS efficiency and why does EN 1822 use it instead of fixed 0.3-micron efficiency?\",\n            \"acceptedAnswer\": {\n              \"@type\": \"Answer\",\n              \"text\": \"MPPS — Most Penetrating Particle Size — is the particle size at which a filter media achieves its lowest efficiency. For glass microfiber HEPA media, MPPS typically falls in the 0.1–0.3 micron range. EN 1822 rates filters at MPPS because it represents the worst-case filtration scenario: a filter meeting its rated efficiency at MPPS will exceed that efficiency at all other particle sizes, making MPPS a more rigorous metric than a single fixed-particle-size result.\"\n            }\n          },\n          {\n            \"@type\": \"Question\",\n            \"name\": \"What does individually tested per EN 1822 mean and why is it required?\",\n            \"acceptedAnswer\": {\n              \"@type\": \"Answer\",\n              \"text\": \"Individual testing per EN 1822 means every filter unit — not a batch sample — is tested across its entire face using an aerosol photometer or particle counter to confirm the absence of localised leaks in the media pack, frame seal, and gasket interface. Test results are documented and affixed to each filter unit, providing per-unit traceability for pharmaceutical GMP batch records, hospital commissioning, and ISO cleanroom validation protocols. Batch-tested filters cannot satisfy this requirement.\"\n            }\n          },\n          {\n            \"@type\": \"Question\",\n            \"name\": \"What frame and gasket options are available?\",\n            \"acceptedAnswer\": {\n              \"@type\": \"Answer\",\n              \"text\": \"Frame options: GI (galvanized steel, general applications), SS (stainless steel, pharmaceutical\/food\/corrosive), AL (aluminum, weight-sensitive installations), MDF (non-metal construction). Gasket options: seamless polyurethane (PU) or Neoprene. Two-part polyurethane media sealant provides a permanent, leak-proof bond between media pack and frame.\"\n            }\n          },\n          {\n            \"@type\": \"Question\",\n            \"name\": \"How does the High Capacity HEPA compare to the V-Bank HV HEPA filter?\",\n            \"acceptedAnswer\": {\n              \"@type\": \"Answer\",\n              \"text\": \"The AccuraFil V-Bank HV HEPA uses a mini-pleat V-bank design providing 291 sq ft of media area and supports up to 2000 CFM at a low 1.05 in wc resistance — the highest airflow model in AccuraFil's HEPA range. The HC HEPA uses a deep-pleat design supporting 1700 CFM at 1.10 in wc initial pressure drop. Both carry the same EN 1822 grade options; the choice depends on housing depth, airflow volume, and energy efficiency priorities.\"\n            }\n          },\n          {\n            \"@type\": \"Question\",\n            \"name\": \"What industries use the AccuraFil High Capacity HEPA filter?\",\n            \"acceptedAnswer\": {\n              \"@type\": \"Answer\",\n              \"text\": \"Primary industries: pharmaceutical and biotech GMP manufacturing (H13–H14 with per-unit EN 1822 certification), hospitals and healthcare (H13–H14 for operating theatres, isolation rooms, critical care HVAC), ISO cleanrooms (H14 for Class 3–4; H13 for Class 5–7), and high-volume industrial AHUs (E12–H13 for sustained high-airflow operations with extended maintenance intervals).\"\n            }\n          }\n        ]\n      },\n\n      {\n        \"@type\": \"HowTo\",\n        \"@id\": \"https:\/\/accurafil.com\/products\/hepa-hc-filters#howto\",\n        \"name\": \"How to Select the Right High Capacity HEPA Filter for Your Application\",\n        \"description\": \"A step-by-step guide to choosing the correct EN 1822 grade, frame material, and gasket for the AccuraFil High Capacity HEPA Filter.\",\n        \"totalTime\": \"PT5M\",\n        \"tool\": [\n          { \"@type\": \"HowToTool\", \"name\": \"AccuraFil HC HEPA Filter Datasheet\" },\n          { \"@type\": \"HowToTool\", \"name\": \"EN 1822 Filtration Standard Reference\" }\n        ],\n        \"step\": [\n          {\n            \"@type\": \"HowToStep\",\n            \"position\": 1,\n            \"name\": \"Identify your EN 1822 grade requirement\",\n            \"text\": \"Select E12 (≥99.5% MPPS) for general industrial pre-filtration. Select H13 (≥99.95% MPPS) for hospitals, pharmaceutical, and ISO Class 5–7. Select H14 (≥99.995% MPPS) for ISO Class 3–4, aseptic environments, and critical containment.\"\n          },\n          {\n            \"@type\": \"HowToStep\",\n            \"position\": 2,\n            \"name\": \"Confirm High Capacity vs Standard Capacity\",\n            \"text\": \"Choose HC when minimising change-out frequency, when sustaining high airflow volumes (up to 1700 CFM), or when maximising service intervals between planned shutdowns. Both HC and SC share the same external dimensions and EN 1822 grade range.\"\n          },\n          {\n            \"@type\": \"HowToStep\",\n            \"position\": 3,\n            \"name\": \"Select the frame material\",\n            \"text\": \"GI for standard industrial\/commercial. SS for pharma, food processing, corrosive environments. AL for weight-sensitive ceiling-grid installations. MDF where non-metal construction is required.\"\n          },\n          {\n            \"@type\": \"HowToStep\",\n            \"position\": 4,\n            \"name\": \"Select gasket type and verify installation parameters\",\n            \"text\": \"PU gasket for most cleanroom and HVAC applications. Neoprene for chemical resistance or specific compression requirements. Confirm operating temperature ≤80°C (176°F) and system supports 2.00 in wg recommended final pressure drop.\"\n          }\n        ]\n      },\n\n      {\n        \"@type\": \"ItemList\",\n        \"@id\": \"https:\/\/accurafil.com\/products\/hepa-hc-filters#grade-comparison\",\n        \"name\": \"EN 1822 HEPA Grade Comparison: E12, H13, H14\",\n        \"description\": \"Comparison of EN 1822 filter grades available for the AccuraFil High Capacity HEPA Filter\",\n        \"itemListElement\": [\n          {\n            \"@type\": \"ListItem\",\n            \"position\": 1,\n            \"name\": \"E12 — ≥99.5% MPPS\",\n            \"description\": \"EN 1822 E12 HEPA grade. Suitable for general industrial pre-filtration and light cleanroom applications. Efficiency at 0.3μ: ≥99.97%.\"\n          },\n          {\n            \"@type\": \"ListItem\",\n            \"position\": 2,\n            \"name\": \"H13 — ≥99.95% MPPS\",\n            \"description\": \"EN 1822 H13 HEPA grade. Primary grade for hospitals, pharmaceutical manufacturing, and ISO Class 5–7 cleanrooms. Efficiency at 0.3μ: ≥99.99%.\"\n          },\n          {\n            \"@type\": \"ListItem\",\n            \"position\": 3,\n            \"name\": \"H14 — ≥99.995% MPPS\",\n            \"description\": \"EN 1822 H14 HEPA grade. Required for ISO Class 3–4 cleanrooms, aseptic filling, and critical containment. Efficiency at 0.3μ: ≥99.999%.\"\n          }\n        ]\n      }\n\n    ]\n  }\n  \u003c\/script\u003e\n\n  \u003cstyle\u003e\n    :root {\n      --font-body: 'Futura', 'Century Gothic', 'Futura PT', Trebuchet MS, sans-serif;\n\n      --color-teal-deep:    #0F4C5C;\n      --color-teal-mid:     #007B8C;\n      --color-teal-bright:  #009BAD;\n      --color-teal-pale:    #f0fdfa;\n      --color-hero-bg:      #97e6e6;\n      --color-accent-green: #2ECC71;\n      --color-accent-amber: #F39C12;\n      --color-white:        #FFFFFF;\n      --color-slate-50:     #F8FAFC;\n      --color-slate-100:    #EDF2F7;\n      --color-slate-400:    #A0AEC0;\n      --color-slate-600:    #4A5568;\n      --color-slate-800:    #2d3748;\n\n      --color-hc-deep:   #6b1a1a;\n      --color-hc-mid:    #c0392b;\n      --color-hc-bright: #e05c4b;\n      --color-hc-pale:   #fdf2f2;\n\n      --text-xs:    1.5rem;\n      --text-sm:    1.8rem;\n      --text-base:  2rem;\n      --text-md:    2.2rem;\n      --text-lg:    2.5rem;\n      --text-xl:    3.8rem;\n      --text-hero:  3.8rem;\n\n      --radius-sm:  10px;\n      --radius-md:  20px;\n      --radius-lg:  20px;\n\n      --shadow-card:  0 10px 25px rgba(0,0,0,0.06);\n      --shadow-hover: 0 15px 35px rgba(0,0,0,0.12);\n      --transition:   0.3s ease;\n    }\n\n    @media (prefers-reduced-motion: reduce) {\n      *, *::before, *::after {\n        animation-duration: 0.01ms !important;\n        transition-duration: 0.01ms !important;\n      }\n      .feature-card { padding: 20px; }\n    }\n\n    *, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }\n\n    body {\n      font-family: var(--font-body);\n      font-size: var(--text-base);\n      line-height: 1.6;\n      color: var(--color-slate-800);\n      background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);\n      -webkit-font-smoothing: antialiased;\n    }\n\n    a {\n      color: var(--color-teal-mid);\n      text-decoration: underline;\n      text-underline-offset: 3px;\n      font-weight: 600;\n      transition: color var(--transition);\n    }\n    a:hover { color: var(--color-teal-bright); }\n\n    .page-wrapper {\n      max-width: 1200px;\n      margin: 0 auto;\n      padding: 20px 20px 60px;\n    }\n\n    .breadcrumb {\n      display: flex;\n      flex-wrap: wrap;\n      gap: 6px;\n      align-items: center;\n      font-size: var(--text-xs);\n      color: var(--color-slate-400);\n      margin-bottom: 24px;\n    }\n    .breadcrumb a { color: var(--color-slate-400); text-decoration: none; font-weight: 400; }\n    .breadcrumb a:hover { color: var(--color-teal-mid); }\n    .breadcrumb-current { color: var(--color-teal-mid); font-weight: 500; }\n\n    .product-hero {\n      text-align: center;\n      margin-bottom: 40px;\n      padding: 50px 30px;\n      background: var(--color-hero-bg);\n      border-radius: var(--radius-lg);\n      color: var(--color-teal-deep);\n      box-shadow: 0 15px 35px rgba(0, 123, 140, 0.2);\n      position: relative;\n      overflow: hidden;\n    }\n    .product-hero::before {\n      content: '';\n      position: absolute;\n      inset: 0;\n      background: radial-gradient(circle at 70% 30%, rgba(255,255,255,0.35) 0%, transparent 65%);\n      pointer-events: none;\n    }\n    .hero-eyebrow {\n      font-size: var(--text-base);\n      font-weight: 700;\n      letter-spacing: 0.13em;\n      text-transform: uppercase;\n      color: var(--color-teal-mid);\n      margin-bottom: 12px;\n      position: relative;\n      z-index: 2;\n    }\n    .product-hero h1 {\n      font-size: var(--text-hero);\n      font-weight: 700;\n      line-height: 1.2;\n      margin-bottom: 10px;\n      position: relative;\n      z-index: 2;\n    }\n    .hero-subtitle {\n      font-size: var(--text-md);\n      opacity: 0.85;\n      margin-bottom: 20px;\n      position: relative;\n      z-index: 2;\n      font-weight: 500;\n    }\n    .hero-badges {\n      display: flex;\n      flex-wrap: wrap;\n      justify-content: center;\n      gap: 10px;\n      position: relative;\n      z-index: 2;\n      margin-top: 6px;\n    }\n    .badge {\n      display: inline-flex;\n      align-items: center;\n      padding: 6px 15px;\n      border-radius: 100px;\n      font-size: var(--text-xs);\n      font-weight: 700;\n      letter-spacing: 0.04em;\n    }\n    .badge-teal  { background: rgba(0,123,140,0.12);   color: var(--color-teal-mid);   border: 1px solid rgba(0,123,140,0.25); }\n    .badge-green { background: rgba(46,204,113,0.15);  color: #1a9a50;                 border: 1px solid rgba(46,204,113,0.3); }\n    .badge-amber { background: rgba(243,156,18,0.15);  color: #b8730a;                 border: 1px solid rgba(243,156,18,0.3); }\n    .badge-hc    { background: rgba(192,57,43,0.10);   color: var(--color-hc-mid);     border: 1px solid rgba(192,57,43,0.25); }\n\n    .card {\n      background: var(--color-white);\n      padding: 30px;\n      border-radius: var(--radius-md);\n      box-shadow: var(--shadow-card);\n      transition: transform var(--transition), box-shadow var(--transition);\n    }\n    .card:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); }\n\n    .card-eyebrow {\n      font-size: var(--text-sm);\n      font-weight: 700;\n      letter-spacing: 0.12em;\n      text-transform: uppercase;\n      color: var(--color-teal-bright);\n      margin-bottom: 6px;\n    }\n    .card-title {\n      font-size: var(--text-lg);\n      font-weight: 700;\n      color: var(--color-teal-mid);\n      margin-bottom: 20px;\n      padding-bottom: 10px;\n      border-bottom: 2px solid var(--color-slate-100);\n    }\n\n    .grid-2 {\n      display: grid;\n      grid-template-columns: 1fr 1fr;\n      gap: 30px;\n      margin-bottom: 30px;\n    }\n    @media (max-width: 768px) { .grid-2 { grid-template-columns: 1fr; } }\n\n    .specs-table { width: 100%; border-collapse: collapse; }\n    .specs-table tr:last-child td { border-bottom: none; }\n    .specs-table td {\n      padding: 12px 15px;\n      border-bottom: 1px solid var(--color-slate-100);\n      font-size: var(--text-sm);\n      vertical-align: top;\n    }\n    .spec-label {\n      font-weight: 700;\n      color: var(--color-slate-600);\n      background: var(--color-slate-50);\n      width: 42%;\n    }\n    .spec-value { color: var(--color-slate-800); }\n\n    .grade-pills { display: flex; flex-wrap: wrap; gap: 5px; }\n    .grade-pill {\n      display: inline-block;\n      padding: 3px 10px;\n      border-radius: 100px;\n      background: var(--color-hc-pale);\n      color: var(--color-hc-mid);\n      font-size: var(--text-xs);\n      font-weight: 700;\n      border: 1px solid rgba(192,57,43,0.2);\n    }\n\n    .highlight-bar {\n      background: linear-gradient(90deg, var(--color-teal-mid) 0%, var(--color-hc-mid) 100%);\n      color: var(--color-white);\n      padding: 18px 28px;\n      border-radius: var(--radius-sm);\n      text-align: center;\n      font-weight: 700;\n      font-size: var(--text-md);\n      margin-bottom: 30px;\n    }\n\n    .use-case-grid {\n      display: grid;\n      grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));\n      gap: 20px;\n      margin-top: 20px;\n    }\n    .use-case-item {\n      text-align: center;\n      padding: 20px 16px;\n      background: var(--color-teal-pale);\n      border-radius: var(--radius-sm);\n      border: 1px solid rgba(0,123,140,0.2);\n      transition: background var(--transition), transform var(--transition);\n    }\n    .use-case-item:hover { background: rgba(0,155,173,0.1); transform: translateY(-2px); }\n    .use-case-item strong { display: block; color: var(--color-teal-deep); font-weight: 700; font-size: var(--text-sm); margin-bottom: 8px; }\n    .use-case-item p { font-size: var(--text-xs); color: var(--color-slate-600); line-height: 1.5; }\n\n    .howto-steps { list-style: none; display: flex; flex-direction: column; }\n    .howto-step {\n      display: flex;\n      gap: 18px;\n      align-items: flex-start;\n      padding: 20px 0;\n      border-bottom: 1px solid var(--color-slate-100);\n    }\n    .howto-step:last-child { border-bottom: none; }\n    .step-number {\n      flex-shrink: 0;\n      width: 54px; height: 54px;\n      background: var(--color-teal-mid);\n      color: var(--color-white);\n      border-radius: 50%;\n      display: flex; align-items: center; justify-content: center;\n      font-weight: 700;\n      font-size: var(--text-sm);\n    }\n    .step-content h3 { font-size: var(--text-md); font-weight: 700; color: var(--color-teal-deep); margin-bottom: 6px; }\n    .step-content p  { font-size: var(--text-sm); color: var(--color-slate-600); line-height: 1.65; }\n\n    .faq-list { display: flex; flex-direction: column; }\n    .faq-item { border-bottom: 1px solid var(--color-slate-100); padding: 20px 0; }\n    .faq-item:last-child { border-bottom: none; }\n    .faq-item h3 { font-size: var(--text-md); font-weight: 700; color: var(--color-teal-deep); margin-bottom: 8px; }\n    .faq-item p  { font-size: var(--text-base); color: var(--color-slate-600); line-height: 1.65; }\n\n    .prose { font-size: var(--text-md); line-height: 1.75; color: var(--color-slate-600); }\n    .prose p + p  { margin-top: 14px; }\n    .prose strong { color: var(--color-slate-800); }\n\n    .mb-30 { margin-bottom: 30px; }\n    .mb-40 { margin-bottom: 40px; }\n\n    \/* AI Speakable summary block — visually neutral, semantically rich *\/\n    .ai-speakable-summary {\n      background: var(--color-slate-50);\n      border-left: 4px solid var(--color-teal-mid);\n      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;\n      padding: 18px 22px;\n      margin-bottom: 30px;\n      font-size: var(--text-sm);\n      color: var(--color-slate-600);\n      line-height: 1.7;\n    }\n    .ai-speakable-summary strong { color: var(--color-teal-deep); }\n\n    .features-section {\n      display: grid;\n      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));\n      gap: 30px;\n      margin-bottom: 50px;\n    }\n    .feature-card {\n      background: white;\n      padding: 30px;\n      border-radius: 15px;\n      box-shadow: 0 10px 30px rgba(0,0,0,0.1);\n      transition: all 0.3s ease;\n      position: relative;\n      overflow: hidden;\n    }\n    .feature-card::before {\n      content: '';\n      position: absolute;\n      top: 0; left: 0;\n      width: 100%; height: 4px;\n      background: linear-gradient(90deg, #c0392b, #e05c4b);\n    }\n    .feature-card:hover { transform: translateY(-10px); box-shadow: 0 20px 40px rgba(0,0,0,0.15); }\n    .feature-icon {\n      width: 60px; height: 60px;\n      background: #97e6e6;\n      border-radius: 50%;\n      display: flex; align-items: center; justify-content: center;\n      margin-bottom: 20px;\n      font-size: 30px; font-weight: bold;\n    }\n    .feature-title { font-size: 2.2rem; font-weight: 600; margin-bottom: 15px; color: #2c3e50; }\n    .feature-list { list-style: none; font-size: 2rem; }\n    .feature-list li { padding: 8px 0; color: #555; }\n\n    .grade-grid {\n      display: grid;\n      grid-template-columns: repeat(3, 1fr);\n      gap: 0;\n      border-radius: var(--radius-sm);\n      overflow: hidden;\n      border: 1px solid rgba(192,57,43,0.2);\n      margin-top: 24px;\n    }\n    .grade-tier {\n      padding: 22px 12px;\n      text-align: center;\n      border-right: 1px solid rgba(192,57,43,0.15);\n    }\n    .grade-tier:last-child { border-right: none; }\n    .grade-tier-e12 { background: var(--color-hc-pale); }\n    .grade-tier-h13 { background: #f8d7d7; }\n    .grade-tier-h14 { background: #f0a8a8; }\n\n    .grade-en {\n      display: block;\n      font-size: var(--text-xs);\n      font-weight: 700;\n      text-transform: uppercase;\n      letter-spacing: 0.1em;\n      color: var(--color-hc-deep);\n      margin-bottom: 4px;\n    }\n    .grade-val {\n      display: block;\n      font-size: var(--text-xl);\n      font-weight: 700;\n      color: var(--color-hc-deep);\n      margin-bottom: 4px;\n      line-height: 1.1;\n    }\n    .grade-sub {\n      display: block;\n      font-size: var(--text-xs);\n      color: var(--color-hc-deep);\n      opacity: 0.7;\n      margin-bottom: 4px;\n    }\n    .grade-label {\n      display: block;\n      font-size: var(--text-xs);\n      color: var(--color-hc-deep);\n      opacity: 0.65;\n      line-height: 1.4;\n    }\n\n    .perf-grid {\n      display: grid;\n      grid-template-columns: repeat(4, 1fr);\n      gap: 14px;\n      margin-top: 24px;\n    }\n    .perf-card {\n      text-align: center;\n      padding: 18px 12px;\n      border-radius: var(--radius-sm);\n      border: 1px solid rgba(192,57,43,0.2);\n      background: var(--color-hc-pale);\n      transition: background var(--transition), transform var(--transition);\n    }\n    .perf-card:hover { background: #f8d7d7; transform: translateY(-2px); }\n    .perf-icon { font-size: 24px; display: block; margin-bottom: 8px; }\n    .perf-name {\n      font-size: var(--text-sm);\n      font-weight: 700;\n      color: var(--color-hc-deep);\n      display: block;\n      margin-bottom: 6px;\n      text-transform: uppercase;\n      letter-spacing: 0.07em;\n    }\n    .perf-desc { font-size: var(--text-xs); color: var(--color-slate-600); line-height: 1.5; }\n\n    .frame-grid {\n      display: grid;\n      grid-template-columns: repeat(4, 1fr);\n      gap: 14px;\n      margin-top: 16px;\n    }\n    .frame-card {\n      text-align: center;\n      padding: 18px 12px;\n      background: var(--color-hc-pale);\n      border-radius: var(--radius-sm);\n      border: 1px solid rgba(192,57,43,0.2);\n      transition: background var(--transition), transform var(--transition);\n    }\n    .frame-card:hover { background: #f8d7d7; transform: translateY(-2px); }\n    .frame-label {\n      font-size: var(--text-xl);\n      font-weight: 700;\n      color: var(--color-hc-mid);\n      display: block;\n      margin-bottom: 8px;\n    }\n    .frame-desc {\n      font-size: var(--text-xs);\n      color: var(--color-slate-600);\n      line-height: 1.5;\n    }\n\n    @media (max-width: 640px) {\n      .grade-grid  { grid-template-columns: 1fr; }\n      .perf-grid   { grid-template-columns: repeat(2, 1fr); }\n      .frame-grid  { grid-template-columns: repeat(2, 1fr); }\n    }\n  \u003c\/style\u003e\n\n\n\n\n\u003cdiv class=\"page-wrapper\"\u003e\n\n  \u003c!-- ─── BREADCRUMB ───────────────────────────────────────────────── --\u003e\n  \u003cnav aria-label=\"Breadcrumb\" class=\"breadcrumb\"\u003e\n    \u003ca href=\"https:\/\/www.accurafil.com\"\u003eHome\u003c\/a\u003e\n    \u003cspan aria-hidden=\"true\"\u003e›\u003c\/span\u003e\n    \u003ca href=\"\/collections\/industrial-air-filters\"\u003eIndustrial Air Filters\u003c\/a\u003e\n    \u003cspan aria-hidden=\"true\"\u003e›\u003c\/span\u003e\n    \u003ca href=\"\/collections\/hepa-filters\"\u003eHEPA Filters\u003c\/a\u003e\n    \u003cspan aria-hidden=\"true\"\u003e›\u003c\/span\u003e\n    \u003cspan class=\"breadcrumb-current\" aria-current=\"page\"\u003eHigh Capacity HEPA Filter\u003c\/span\u003e\n  \u003c\/nav\u003e\n\n  \u003cmain id=\"main-content\" role=\"main\"\u003e\n\n    \u003c!-- ─── HERO ───────────────────────────────────────────────────── --\u003e\n    \u003cheader class=\"product-hero\" role=\"banner\" itemscope itemtype=\"https:\/\/schema.org\/Product\"\u003e\n      \u003cp class=\"hero-eyebrow\"\u003eIndustrial HVAC Filtration\u003c\/p\u003e\n      \u003ch1 itemprop=\"name\"\u003eHigh Capacity HEPA Filter\u003c\/h1\u003e\n      \u003cp class=\"hero-subtitle\"\u003eDeep-Pleated, Extended-Surface Design for Superior Dust Capture and Airflow.\u003c\/p\u003e\n      \u003cdiv class=\"hero-badges\" role=\"list\" aria-label=\"Product performance highlights\"\u003e\n        \u003cspan class=\"badge badge-hc\" role=\"listitem\"\u003eHigh Capacity\u003c\/span\u003e\n        \u003cspan class=\"badge badge-green\" role=\"listitem\"\u003eUp to H14 \/ 99.995%\u003c\/span\u003e\n        \u003cspan class=\"badge badge-teal\" role=\"listitem\"\u003eDeep Pleat\u003c\/span\u003e\n        \u003cspan class=\"badge badge-hc\" role=\"listitem\"\u003eEN 1822 Tested\u003c\/span\u003e\n        \u003cspan class=\"badge badge-amber\" role=\"listitem\"\u003eUL Classified\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/header\u003e\n\n    \u003c!-- ─── AI SPEAKABLE SUMMARY BLOCK ────────────────────────────────\n         Targeted by speakable schema cssSelector.\n         Voice assistants, Gemini SGE, ChatGPT answer boxes, and\n         Perplexity all prioritize this block for summarization.\n    ──────────────────────────────────────────────────────────────── --\u003e\n    \u003cdiv class=\"ai-speakable-summary\" role=\"note\" aria-label=\"Product quick-reference summary\"\u003e\n      \u003cstrong\u003eQuick Reference:\u003c\/strong\u003e The AccuraFil High Capacity (HC) HEPA Filter is a deep-pleat, increased-pleat-count industrial air filter using micro glass fiber media. It is available in EN 1822 grades \u003cstrong\u003eE12 (≥99.5% MPPS)\u003c\/strong\u003e, \u003cstrong\u003eH13 (≥99.95% MPPS)\u003c\/strong\u003e, and \u003cstrong\u003eH14 (≥99.995% MPPS)\u003c\/strong\u003e. Rated airflow is \u003cstrong\u003e1700 CFM\u003c\/strong\u003e at 1.10 in wc initial pressure drop. Every unit is individually tested per EN 1822 with results affixed to the filter. Frame options: GI, SS, AL, MDF. Maximum operating temperature: 80°C. UL Classified fire rating. SKU: ACC-HPA-HC. Manufactured by AccuraFil.\n    \u003c\/div\u003e\n\n    \u003c!-- ─── ABOUT ──────────────────────────────────────────────────── --\u003e\n    \u003carticle class=\"card mb-40\" aria-labelledby=\"about-heading\" itemscope itemtype=\"https:\/\/schema.org\/Product\"\u003e\n      \u003cp class=\"card-eyebrow\"\u003eAbout This Product\u003c\/p\u003e\n      \u003ch2 class=\"card-title\" id=\"about-heading\"\u003eIncreased Pleat Count for Maximum Dust Holding Capacity and Higher Air Flowrate\u003c\/h2\u003e\n      \u003cdiv class=\"prose\" itemprop=\"description\"\u003e\n        \u003cul style=\"padding-left:20px;\"\u003e\n          \u003cli\u003eAccuraFil High Capacity HEPA Filter features deep pleats with an increased pleat count — delivering a greater effective media surface area than standard capacity designs within the same external footprint, for maximum airflow during high air volumes and significantly extended service intervals.\u003c\/li\u003e\n          \u003cli\u003eMicro glass fiber paper media provides consistent sub-micron filtration efficiency up to H14, with each filter individually tested per EN 1822 to verify leak-proof performance across the entire filter face. Test results are labeled and affixed to each unit for full traceability.\u003c\/li\u003e\n          \u003cli\u003eStandard galvanized steel frame with optional SS, Aluminum, or MDF. Corrugated aluminum separators with hemmed edges precisely and evenly position the pleated media for uniform airflow and maximum media protection. Two-part polyurethane sealant and seamless PU or Neoprene gasket ensure a permanent leak-proof frame and housing seal.\u003c\/li\u003e\n          \u003cli\u003eAvailable in EN 1822 grades E12, H13, and H14 — achieving MPPS efficiencies of ≥99.5%, ≥99.95%, and ≥99.995% respectively, with corresponding 0.3μ efficiencies of ≥99.97%, ≥99.99%, and ≥99.999%. UL Classified fire rating. Engineered for demanding industrial and commercial facilities.\u003c\/li\u003e\n        \u003c\/ul\u003e\n      \u003c\/div\u003e\n    \u003c\/article\u003e\n\n    \u003c!-- ─── FEATURE CARDS ──────────────────────────────────────────── --\u003e\n    \u003cdiv class=\"features-section\"\u003e\n      \u003cdiv class=\"feature-card\"\u003e\n        \u003cdiv class=\"feature-icon\"\u003e🔬\u003c\/div\u003e\n        \u003ch3 class=\"feature-title\"\u003eAdvanced Filtration Technology\u003c\/h3\u003e\n        \u003cul class=\"feature-list\"\u003e\n          \u003cli\u003eIncreased pleat count for greater media surface area vs. standard capacity\u003c\/li\u003e\n          \u003cli\u003eMicro glass fiber paper media for enhanced filtration performance\u003c\/li\u003e\n          \u003cli\u003eEN 1822 grades E12, H13, H14 — up to ≥99.995% MPPS efficiency\u003c\/li\u003e\n          \u003cli\u003eEfficiency at 0.3μ: ≥99.97% \/ ≥99.99% \/ ≥99.999%\u003c\/li\u003e\n        \u003c\/ul\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"feature-card\"\u003e\n        \u003cdiv class=\"feature-icon\"\u003e⚙️\u003c\/div\u003e\n        \u003ch3 class=\"feature-title\"\u003eSuperior Construction\u003c\/h3\u003e\n        \u003cul class=\"feature-list\"\u003e\n          \u003cli\u003eStandard GI steel frame; optional SS, AL, or MDF\u003c\/li\u003e\n          \u003cli\u003eCorrugated aluminum separators with hemmed edges for even media positioning\u003c\/li\u003e\n          \u003cli\u003eTwo-part polyurethane media sealant for permanent leak-proof bonding\u003c\/li\u003e\n          \u003cli\u003eSeamless PU or Neoprene gasket options\u003c\/li\u003e\n        \u003c\/ul\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"feature-card\"\u003e\n        \u003cdiv class=\"feature-icon\"\u003e🛡️\u003c\/div\u003e\n        \u003ch3 class=\"feature-title\"\u003eReliable Performance\u003c\/h3\u003e\n        \u003cul class=\"feature-list\"\u003e\n          \u003cli\u003eDeep pleat design provides large filtering area for maximum airflow at high volumes\u003c\/li\u003e\n          \u003cli\u003eIndividually tested per EN 1822 — test results labeled on each filter\u003c\/li\u003e\n          \u003cli\u003eUL Classified fire rating\u003c\/li\u003e\n          \u003cli\u003eEngineered for demanding industrial and commercial facilities\u003c\/li\u003e\n        \u003c\/ul\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- ─── PERFORMANCE + SPECS ────────────────────────────────────── --\u003e\n    \u003cdiv class=\"grid-2 mb-40\"\u003e\n\n      \u003csection class=\"card\" aria-labelledby=\"features-heading\"\u003e\n        \u003cp class=\"card-eyebrow\"\u003ePerformance Attributes\u003c\/p\u003e\n        \u003ch2 class=\"card-title\" id=\"features-heading\"\u003eHigh Capacity Performance \u0026amp; Certified Integrity\u003c\/h2\u003e\n        \u003cul class=\"feature-list\"\u003e\n          \u003cli\u003e\n            \u003cspan\u003e\n              \u003cstrong\u003eIncreased Pleat Count — Maximum Media Area:\u003c\/strong\u003e HC HEPA has higher pleat count within the deep-pleat construction than the SC HEPA Filter, raising rated airflow from 1200 CFM to 1700 CFM at the same 1.10 in wc initial pressure drop. More pleats packed into the same filter depth directly increases effective media surface area, reducing face velocity at equivalent airflow and dramatically extending the service interval before the recommended final pressure drop of 2.00” wg is reached — minimising change-out frequency in high-demand continuous operations.\n            \u003c\/span\u003e\n          \u003c\/li\u003e\n          \u003cli\u003e\n            \u003cspan\u003e\n              \u003cstrong\u003eIndividual Testing per EN 1822:\u003c\/strong\u003e Every filter unit is tested across its entire face using an aerosol photometer or particle counter to verify the absence of localised leaks in the media pack, frame seal, and gasket interface. Test results are documented and affixed to each unit — providing the traceable per-unit certification required for pharmaceutical GMP batch records, hospital validation, and ISO cleanroom commissioning.\n            \u003c\/span\u003e\n          \u003c\/li\u003e\n          \u003cli\u003e\n            \u003cspan\u003e\n              \u003cstrong\u003eCorrugated Aluminum Separators with Hemmed Edges:\u003c\/strong\u003e Precision-formed hemmed edges evenly and precisely position the pleated media pack, preventing separator migration and pleat convergence throughout the filter's service life. Uniform pleat spacing maintains consistent airflow distribution and preserves the maximum effective media area from first installation to end of service.\n            \u003c\/span\u003e\n          \u003c\/li\u003e\n        \u003c\/ul\u003e\n      \u003c\/section\u003e\n\n      \u003csection class=\"card\" aria-labelledby=\"specs-heading\"\u003e\n        \u003cp class=\"card-eyebrow\"\u003eTechnical Data\u003c\/p\u003e\n        \u003ch2 class=\"card-title\" id=\"specs-heading\"\u003eTechnical Specifications \u0026amp; Compliance\u003c\/h2\u003e\n        \u003ctable class=\"specs-table\" role=\"table\" aria-label=\"Product technical specifications\"\u003e\n          \u003ctbody\u003e\n            \u003ctr\u003e\n              \u003ctd class=\"spec-label\" scope=\"row\"\u003eFilter Type\u003c\/td\u003e\n              \u003ctd class=\"spec-value\"\u003eDeep Pleat — Increased Pleat Count\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003ctd class=\"spec-label\" scope=\"row\"\u003eFilter Grades (EN 1822)\u003c\/td\u003e\n              \u003ctd class=\"spec-value\"\u003e\n                \u003cdiv class=\"grade-pills\" aria-label=\"Available EN 1822 grades\"\u003e\n                  \u003cspan class=\"grade-pill\"\u003eE12\u003c\/span\u003e\n                  \u003cspan class=\"grade-pill\"\u003eH13\u003c\/span\u003e\n                  \u003cspan class=\"grade-pill\"\u003eH14\u003c\/span\u003e\n                \u003c\/div\u003e\n              \u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003ctd class=\"spec-label\" scope=\"row\"\u003eMPPS Efficiency\u003c\/td\u003e\n              \u003ctd class=\"spec-value\"\u003e≥99.5% \/ ≥99.95% \/ ≥99.995%\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003ctd class=\"spec-label\" scope=\"row\"\u003eEfficiency @ 0.3μ\u003c\/td\u003e\n              \u003ctd class=\"spec-value\"\u003e≥99.97% \/ ≥99.99% \/ ≥99.999%\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003ctd class=\"spec-label\" scope=\"row\"\u003eRated Airflow\u003c\/td\u003e\n              \u003ctd class=\"spec-value\"\u003e1700 CFM\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003ctd class=\"spec-label\" scope=\"row\"\u003eInitial Pressure Drop\u003c\/td\u003e\n              \u003ctd class=\"spec-value\"\u003e1.10 in wc\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003ctd class=\"spec-label\" scope=\"row\"\u003eFilter Media\u003c\/td\u003e\n              \u003ctd class=\"spec-value\" itemprop=\"material\"\u003eGlass Microfiber\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003ctd class=\"spec-label\" scope=\"row\"\u003eMedia Separator\u003c\/td\u003e\n              \u003ctd class=\"spec-value\"\u003eCorrugated Aluminum Separator (Hemmed Edges)\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003ctd class=\"spec-label\" scope=\"row\"\u003eFrame Material\u003c\/td\u003e\n              \u003ctd class=\"spec-value\"\u003eSS \/ GI \/ AL \/ MDF\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003ctd class=\"spec-label\" scope=\"row\"\u003eMedia Sealant\u003c\/td\u003e\n              \u003ctd class=\"spec-value\"\u003eTwo-Part Poly-Urethane\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003ctd class=\"spec-label\" scope=\"row\"\u003eGasket\u003c\/td\u003e\n              \u003ctd class=\"spec-value\"\u003eSeamless PU \/ Neoprene\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003ctd class=\"spec-label\" scope=\"row\"\u003eMax Temperature\u003c\/td\u003e\n              \u003ctd class=\"spec-value\"\u003e80°C (176°F)\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003ctd class=\"spec-label\" scope=\"row\"\u003eFinal Pressure Drop\u003c\/td\u003e\n              \u003ctd class=\"spec-value\"\u003e2.00” wg (Recommended)\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003ctd class=\"spec-label\" scope=\"row\"\u003eFire Rating\u003c\/td\u003e\n              \u003ctd class=\"spec-value\"\u003eUL Classified\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003ctd class=\"spec-label\" scope=\"row\"\u003eTesting Standard\u003c\/td\u003e\n              \u003ctd class=\"spec-value\"\u003eIndividually Tested per EN 1822\u003c\/td\u003e\n            \u003c\/tr\u003e\n          \u003c\/tbody\u003e\n        \u003c\/table\u003e\n      \u003c\/section\u003e\n\n    \u003c\/div\u003e\n\n    \u003c!-- ─── EN 1822 GRADE TIER PANEL ──────────────────────────────── --\u003e\n    \u003cp style=\"font-size: var(--text-sm); font-weight: 700; color: var(--color-slate-600); text-transform: uppercase; letter-spacing: 0.1em; margin: 0 0 4px;\"\u003eEN 1822 Filter Grade Tiers\u003c\/p\u003e\n    \u003cdiv class=\"grade-grid\" role=\"list\" aria-label=\"Available EN 1822 filter grades\"\u003e\n      \u003cdiv class=\"grade-tier grade-tier-e12\" role=\"listitem\" itemscope itemtype=\"https:\/\/schema.org\/PropertyValue\"\u003e\n        \u003cspan class=\"grade-en\"\u003eEN 1822\u003c\/span\u003e\n        \u003cspan class=\"grade-val\" itemprop=\"name\"\u003eE12\u003c\/span\u003e\n        \u003cspan class=\"grade-sub\"\u003e≥99.5% MPPS  |  ≥99.97% @ 0.3μ\u003c\/span\u003e\n        \u003cspan class=\"grade-label\" itemprop=\"value\"\u003eIndustrial pre-filtration \u0026amp; light cleanroom applications\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"grade-tier grade-tier-h13\" role=\"listitem\" itemscope itemtype=\"https:\/\/schema.org\/PropertyValue\"\u003e\n        \u003cspan class=\"grade-en\"\u003eEN 1822\u003c\/span\u003e\n        \u003cspan class=\"grade-val\" itemprop=\"name\"\u003eH13\u003c\/span\u003e\n        \u003cspan class=\"grade-sub\"\u003e≥99.95% MPPS  |  ≥99.99% @ 0.3μ\u003c\/span\u003e\n        \u003cspan class=\"grade-label\" itemprop=\"value\"\u003eHospitals, pharma \u0026amp; ISO Class 5–7 cleanrooms\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"grade-tier grade-tier-h14\" role=\"listitem\" itemscope itemtype=\"https:\/\/schema.org\/PropertyValue\"\u003e\n        \u003cspan class=\"grade-en\"\u003eEN 1822\u003c\/span\u003e\n        \u003cspan class=\"grade-val\" itemprop=\"name\"\u003eH14\u003c\/span\u003e\n        \u003cspan class=\"grade-sub\"\u003e≥99.995% MPPS  |  ≥99.999% @ 0.3μ\u003c\/span\u003e\n        \u003cspan class=\"grade-label\" itemprop=\"value\"\u003eISO Class 3–4 cleanrooms \u0026amp; aseptic critical environments\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- ─── FRAME MATERIAL OPTIONS ─────────────────────────────────── --\u003e\n    \u003cp style=\"font-size: var(--text-sm); font-weight: 700; color: var(--color-slate-600); text-transform: uppercase; letter-spacing: 0.1em; margin: 22px 0 4px;\"\u003eFrame Material Options\u003c\/p\u003e\n    \u003cdiv class=\"frame-grid\" style=\"margin-bottom: 30px;\"\u003e\n      \u003cdiv class=\"frame-card\"\u003e\n        \u003cspan class=\"frame-label\"\u003eGI\u003c\/span\u003e\n        \u003cspan class=\"frame-desc\"\u003eStandard galvanized steel — general industrial and commercial applications\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"frame-card\"\u003e\n        \u003cspan class=\"frame-label\"\u003eSS\u003c\/span\u003e\n        \u003cspan class=\"frame-desc\"\u003eStainless steel — pharmaceutical, food processing, and corrosive environments\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"frame-card\"\u003e\n        \u003cspan class=\"frame-label\"\u003eAL\u003c\/span\u003e\n        \u003cspan class=\"frame-desc\"\u003eAluminum — weight-sensitive ceiling grids and module installations\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"frame-card\"\u003e\n        \u003cspan class=\"frame-label\"\u003eMDF\u003c\/span\u003e\n        \u003cspan class=\"frame-desc\"\u003eNon-metal construction where metallic frames are not specified\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- ─── PERFORMANCE QUICK-STATS ───────────────────────────────── --\u003e\n    \u003cp style=\"font-size: var(--text-sm); font-weight: 700; color: var(--color-slate-600); text-transform: uppercase; letter-spacing: 0.1em; margin: 0 0 4px;\"\u003eKey Performance Benefits\u003c\/p\u003e\n    \u003cdiv class=\"perf-grid\" style=\"margin-bottom: 30px;\"\u003e\n      \u003cdiv class=\"perf-card\"\u003e\n        \u003cspan class=\"perf-icon\"\u003e📈\u003c\/span\u003e\n        \u003cspan class=\"perf-name\"\u003eHigh Capacity\u003c\/span\u003e\n        \u003cspan class=\"perf-desc\"\u003eIncreased pleat count maximises media area and dust holding within the same footprint\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"perf-card\"\u003e\n        \u003cspan class=\"perf-icon\"\u003e📋\u003c\/span\u003e\n        \u003cspan class=\"perf-name\"\u003eEN 1822 Tested\u003c\/span\u003e\n        \u003cspan class=\"perf-desc\"\u003eEvery unit individually tested with test results labeled and affixed\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"perf-card\"\u003e\n        \u003cspan class=\"perf-icon\"\u003e🔥\u003c\/span\u003e\n        \u003cspan class=\"perf-name\"\u003eUL Classified\u003c\/span\u003e\n        \u003cspan class=\"perf-desc\"\u003eFire-rated construction for demanding regulatory environments\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"perf-card\"\u003e\n        \u003cspan class=\"perf-icon\"\u003e🌡️\u003c\/span\u003e\n        \u003cspan class=\"perf-name\"\u003e80°C Max Temp\u003c\/span\u003e\n        \u003cspan class=\"perf-desc\"\u003eSuitable for high-temperature industrial and process air applications\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- ─── INDUSTRY APPLICATIONS ─────────────────────────────────── --\u003e\n    \u003csection class=\"card mb-40\" aria-labelledby=\"applications-heading\"\u003e\n      \u003cp class=\"card-eyebrow\"\u003eIndustry Applications\u003c\/p\u003e\n      \u003ch2 class=\"card-title\" id=\"applications-heading\"\u003eCritical Industry Application Profiles\u003c\/h2\u003e\n      \u003cdiv class=\"use-case-grid\" role=\"list\"\u003e\n        \u003cdiv class=\"use-case-item\" role=\"listitem\"\u003e\n          \u003cstrong\u003ePharmaceutical \u0026amp; Biotech\u003c\/strong\u003e\n          \u003cp\u003eH13–H14 with per-unit EN 1822 test certification for GMP manufacturing, aseptic filling, and ISO cleanroom terminal filtration. Extended service life reduces planned shutdown frequency for filter change-out.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"use-case-item\" role=\"listitem\"\u003e\n          \u003cstrong\u003eHospitals \u0026amp; Healthcare\u003c\/strong\u003e\n          \u003cp\u003eH13 \/ H14 for operating theatres, isolation rooms, and critical care. Increased pleat count extends service intervals between changes in continuous 24\/7 hospital HVAC systems.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"use-case-item\" role=\"listitem\"\u003e\n          \u003cstrong\u003eISO Cleanrooms\u003c\/strong\u003e\n          \u003cp\u003eH14 at ≥99.995% MPPS for ISO Class 3–4 environments. High capacity design maximises time between recertification-triggered filter replacements in high-recirculation rate systems.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"use-case-item\" role=\"listitem\"\u003e\n          \u003cstrong\u003eHigh-Volume Industrial AHUs\u003c\/strong\u003e\n          \u003cp\u003eE12–H13 for large-scale industrial facilities where sustained high airflow volumes (up to 1700 CFM) and minimised maintenance downtime are primary operational requirements.\u003c\/p\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/section\u003e\n\n    \u003c!-- ─── HIGHLIGHT BAR ─────────────────────────────────────────── --\u003e\n    \u003cdiv class=\"highlight-bar\" role=\"note\"\u003e\n      High Capacity. Increased Pleat Count. Maximum media area — greater dust holding capacity, longer service life, and individually certified EN 1822 performance from first installation to end of service.\n    \u003c\/div\u003e\n\n    \u003c!-- ─── SELECTION GUIDE (HOWTO) ───────────────────────────────── --\u003e\n    \u003csection class=\"card mb-40\" aria-labelledby=\"howto-heading\"\u003e\n      \u003cp class=\"card-eyebrow\"\u003eSelection Guide\u003c\/p\u003e\n      \u003ch2 class=\"card-title\" id=\"howto-heading\"\u003eHow to Select the Right High Capacity HEPA Filter for Your Application\u003c\/h2\u003e\n      \u003col class=\"howto-steps\" aria-label=\"Steps to select the correct High Capacity HEPA filter\"\u003e\n        \u003cli class=\"howto-step\"\u003e\n          \u003cspan class=\"step-number\" aria-hidden=\"true\"\u003e1\u003c\/span\u003e\n          \u003cdiv class=\"step-content\"\u003e\n            \u003ch3\u003eIdentify your EN 1822 grade requirement\u003c\/h3\u003e\n            \u003cp\u003eSelect E12 (≥99.5% MPPS) for general industrial pre-filtration and light cleanroom applications. Select H13 (≥99.95% MPPS) for hospitals, pharmaceutical manufacturing, and ISO Class 5–7 cleanrooms. Select H14 (≥99.995% MPPS) for ISO Class 3–4 cleanrooms, aseptic environments, and critical containment applications demanding the highest certified sub-micron particle removal.\u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/li\u003e\n        \u003cli class=\"howto-step\"\u003e\n          \u003cspan class=\"step-number\" aria-hidden=\"true\"\u003e2\u003c\/span\u003e\n          \u003cdiv class=\"step-content\"\u003e\n            \u003ch3\u003eConfirm whether High Capacity or Standard Capacity is required\u003c\/h3\u003e\n            \u003cp\u003eChoose the High Capacity design when minimising change-out frequency is a primary operating requirement, when airflow volumes are high (HC is rated to 1700 CFM vs 1200 CFM for SC) and the largest possible media area is needed within the available housing depth, or when extended service intervals between planned maintenance shutdowns are specified. Both designs share the same EN 1822 grade range and external housing dimensions.\u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/li\u003e\n        \u003cli class=\"howto-step\"\u003e\n          \u003cspan class=\"step-number\" aria-hidden=\"true\"\u003e3\u003c\/span\u003e\n          \u003cdiv class=\"step-content\"\u003e\n            \u003ch3\u003eSelect the frame material\u003c\/h3\u003e\n            \u003cp\u003eChoose GI for standard industrial and commercial applications. Select SS for pharmaceutical, food processing, and corrosive environments. Choose AL for weight-sensitive ceiling grid or module installations. Specify MDF where non-metal construction is required by the facility or housing design.\u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/li\u003e\n        \u003cli class=\"howto-step\"\u003e\n          \u003cspan class=\"step-number\" aria-hidden=\"true\"\u003e4\u003c\/span\u003e\n          \u003cdiv class=\"step-content\"\u003e\n            \u003ch3\u003eSelect the gasket type and verify installation parameters\u003c\/h3\u003e\n            \u003cp\u003eChoose seamless polyurethane (PU) gasket for most cleanroom and HVAC applications. Select Neoprene where chemical resistance or specific compression characteristics are required by the housing specification. Confirm operating temperature does not exceed 80°C (176°F) and that the system supports the 2.00” wg recommended final pressure drop.\u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/li\u003e\n      \u003c\/ol\u003e\n    \u003c\/section\u003e\n\n    \u003c!-- ─── PRODUCT COMPARISON ────────────────────────────────────── --\u003e\n    \u003carticle class=\"card mb-40\" aria-labelledby=\"comparison-heading\"\u003e\n      \u003cp class=\"card-eyebrow\"\u003eProduct Comparison\u003c\/p\u003e\n      \u003ch2 class=\"card-title\" id=\"comparison-heading\"\u003ePerformance Comparison: Deep Pleat SC and HC HEPA vs. V-Bank HV HEPA\u003c\/h2\u003e\n      \u003cdiv class=\"prose\"\u003e\n        \u003cp\u003e\n          The \u003ca href=\"https:\/\/accurafil.com\/products\/hepa-hv-filter-high-volume-v-bank-filters\"\u003eHEPA HV Filter\u003c\/a\u003e is the top-performing model in the AccuraFil range, utilizing a V-Bank mini-pleat design to provide the highest media surface area (291 sq.ft.). This allows it to handle 2000 CFM while maintaining the lowest resistance (1.05 in wc), offering superior airflow and energy efficiency compared to traditional deep-pleat designs.\n        \u003c\/p\u003e\n        \u003cp\u003e\n          In contrast, the \u003ca href=\"https:\/\/accurafil.com\/products\/hepa-hc-filters\"\u003eHC HEPA\u003c\/a\u003e and \u003ca href=\"https:\/\/accurafil.com\/products\/hepa-sc-filter-durable-industrial-air-filters\"\u003eSC HEPA\u003c\/a\u003e filters use deep-pleat designs. The HC supports 1700 CFM and the SC supports 1200 CFM — both at a 1.10 in wc initial pressure drop. All three models are available in the same EN 1822 grade range (E12, H13, H14); the choice depends on housing depth, target airflow, and energy efficiency priorities.\n        \u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/article\u003e\n\n    \u003c!-- ─── FAQ ───────────────────────────────────────────────────── --\u003e\n    \u003csection class=\"card mb-40\" aria-labelledby=\"faq-heading\"\u003e\n      \u003cp class=\"card-eyebrow\"\u003eFrequently Asked Questions\u003c\/p\u003e\n      \u003ch2 class=\"card-title\" id=\"faq-heading\"\u003eProduct FAQ\u003c\/h2\u003e\n      \u003cdiv class=\"faq-list\"\u003e\n\n        \u003cdiv class=\"faq-item\" itemprop=\"mainEntity\" itemscope itemtype=\"https:\/\/schema.org\/Question\"\u003e\n          \u003ch3 itemprop=\"name\"\u003eWhat is the difference between a High Capacity HEPA filter and a Standard Capacity HEPA filter?\u003c\/h3\u003e\n          \u003cdiv itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\"\u003e\n            \u003cp itemprop=\"text\"\u003eThe High Capacity (HC) and Standard Capacity (SC) HEPA filters share identical dimensions and deep-pleat construction, differing only in pleat density. By packing more media into the same footprint, the HC model increases surface area, leading to greater dust-holding capacity and a longer service life. This design boosts rated airflow to 1,700 CFM (compared to 1,200 CFM for the SC HEPA filter) while maintaining the same 1.1” w.c. initial pressure drop.\u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"faq-item\" itemprop=\"mainEntity\" itemscope itemtype=\"https:\/\/schema.org\/Question\"\u003e\n          \u003ch3 itemprop=\"name\"\u003eWhat EN 1822 grades are available and what do they mean?\u003c\/h3\u003e\n          \u003cdiv itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\"\u003e\n            \u003cp itemprop=\"text\"\u003eEN 1822 is the European standard for HEPA and ULPA filters, using Most Penetrating Particle Size (MPPS) efficiency as the defining metric. AccuraFil's High Capacity HEPA Filter is available in three grades: E12 achieves ≥99.5% MPPS efficiency and suits general industrial and light cleanroom pre-filtration; H13 at ≥99.95% MPPS is the primary grade for hospitals, pharmaceutical manufacturing, and ISO Class 5–7 cleanrooms; H14 at ≥99.995% MPPS is required for ISO Class 3–4 cleanrooms, aseptic filling environments, and critical containment applications where the highest sub-micron particle removal is mandatory.\u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"faq-item\" itemprop=\"mainEntity\" itemscope itemtype=\"https:\/\/schema.org\/Question\"\u003e\n          \u003ch3 itemprop=\"name\"\u003eWhat is MPPS efficiency and why does EN 1822 use it instead of fixed 0.3-micron efficiency?\u003c\/h3\u003e\n          \u003cdiv itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\"\u003e\n            \u003cp itemprop=\"text\"\u003eMPPS — Most Penetrating Particle Size — is the particle size at which a given filter media achieves its lowest efficiency. For glass microfiber HEPA media, MPPS typically falls in the 0.1–0.3 micron range depending on fiber diameter and media structure. EN 1822 rates filters at MPPS because it represents the worst-case filtration scenario: a filter that meets its rated efficiency at MPPS will exceed that efficiency at all other particle sizes. This makes MPPS efficiency a more rigorous and conservative metric than a single fixed-particle-size result. AccuraFil also provides efficiency at 0.3 microns for cross-reference with ASHRAE and legacy specifications.\u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"faq-item\" itemprop=\"mainEntity\" itemscope itemtype=\"https:\/\/schema.org\/Question\"\u003e\n          \u003ch3 itemprop=\"name\"\u003eWhat does individually tested per EN 1822 mean and why is it required?\u003c\/h3\u003e\n          \u003cdiv itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\"\u003e\n            \u003cp itemprop=\"text\"\u003eIndividual testing per EN 1822 means every filter unit is tested across its entire face — not batch sampled — using an aerosol photometer or particle counter to confirm the absence of localised leaks in the media pack, frame seal, and gasket interface. Test results are documented and affixed to each filter, providing per-unit traceability for regulatory audits, pharmaceutical GMP batch records, cleanroom validation protocols, and hospital commissioning documentation. For critical environments, individual per-unit test certification is typically a mandatory procurement requirement that batch-tested filters cannot satisfy.\u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"faq-item\" itemprop=\"mainEntity\" itemscope itemtype=\"https:\/\/schema.org\/Question\"\u003e\n          \u003ch3 itemprop=\"name\"\u003eWhat frame and gasket options are available?\u003c\/h3\u003e\n          \u003cdiv itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\"\u003e\n            \u003cp itemprop=\"text\"\u003eThe AccuraFil High Capacity HEPA Filter is available with frames in GI (standard galvanized steel for general applications), SS (stainless steel for pharmaceutical, food processing, and corrosive environments), AL (aluminum for weight-sensitive installations), and MDF (where non-metal construction is specified). Gasket options are seamless polyurethane or Neoprene, selected based on housing face seal requirements, chemical exposure, and temperature range. The two-part polyurethane media sealant provides a permanent, leak-proof bond between the media pack and frame throughout the filter's service life.\u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"faq-item\" itemprop=\"mainEntity\" itemscope itemtype=\"https:\/\/schema.org\/Question\"\u003e\n          \u003ch3 itemprop=\"name\"\u003eHow does the AccuraFil HC HEPA compare to the V-Bank HV HEPA?\u003c\/h3\u003e\n          \u003cdiv itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\"\u003e\n            \u003cp itemprop=\"text\"\u003eThe AccuraFil V-Bank HV HEPA uses a mini-pleat V-bank design providing 291 sq ft of media area and handles up to 2000 CFM at 1.05 in wc — the highest-airflow HEPA model in the AccuraFil range. The HC HEPA uses a deep-pleat design supporting 1700 CFM at 1.10 in wc. The SC HEPA supports 1200 CFM at the same 1.10 in wc initial pressure drop. All three carry the same EN 1822 grade options (E12, H13, H14).\u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/div\u003e\n\n      \u003c\/div\u003e\n    \u003c\/section\u003e\n\n  \u003c\/main\u003e\n\u003c\/div\u003e\n\n\n\u003c\/body\u003e","brand":"AccuraFil","offers":[{"title":"12 x 24 x 11.5 \/ E12 \/ 99.97% \/ GI DTF - Neoprene Gasket on Downstream Side","offer_id":48344503648564,"sku":"11-30-1130220-405-1","price":421.39,"currency_code":"USD","in_stock":true},{"title":"12 x 24 x 11.5 \/ H13 \/ 99.99% \/ GI DTF - Neoprene Gasket on Downstream Side","offer_id":48344503681332,"sku":"11-30-1230220-405-1","price":429.81,"currency_code":"USD","in_stock":true},{"title":"12 x 24 x 11.5 \/ H13 \/ 99.99% \/ GI BOX - Neoprene Gasket on Downstream Side","offer_id":48344503746868,"sku":"11-30-1230120-405-1","price":410.27,"currency_code":"USD","in_stock":true},{"title":"11 3\/8 x 23 3\/8 x 11.5 \/ H13 \/ 99.99% \/ GI BOX - Neoprene Gasket on Downstream Side","offer_id":48344503877940,"sku":"11-30-1230120-1253-1","price":392.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0716\/7767\/3780\/files\/8.1HEPAHCSC-1.jpg?v=1757294917","url":"https:\/\/accurafil.com\/products\/hepa-hc-filters","provider":"AccuraFil","version":"1.0","type":"link"}