{"product_id":"cassette-air-filters","title":"Cassette air filters – pre-filters for ventilation and air conditioning systems","description":"\u003ch2 data-start=\"644\" data-end=\"706\"\u003eCassette filters – reliable pre-filtration for HVAC systems\u003c\/h2\u003e\n\u003cp data-start=\"708\" data-end=\"1026\"\u003eCassette filters are widely used \u003cstrong data-start=\"741\" data-end=\"760\"\u003eair pre-filters\u003c\/strong\u003e designed for the first stage of filtration in \u003cstrong data-start=\"807\" data-end=\"851\"\u003eventilation and air conditioning systems\u003c\/strong\u003e. They play a crucial role in protecting downstream components such as fans, heat exchangers and higher-efficiency filters by removing coarse and medium airborne contaminants.\u003c\/p\u003e\n\u003cp data-start=\"1028\" data-end=\"1222\"\u003eThese filters are commonly applied in HVAC installations with \u003cstrong data-start=\"1090\" data-end=\"1143\"\u003estandard to moderate air cleanliness requirements\u003c\/strong\u003e, where stable airflow, low pressure drop and reliable operation are essential.\u003c\/p\u003e\n\u003chr data-start=\"1224\" data-end=\"1227\"\u003e\n\u003ch2 data-start=\"1229\" data-end=\"1266\"\u003eFiltration concept and performance\u003c\/h2\u003e\n\u003cp data-start=\"1268\" data-end=\"1393\"\u003eCassette filters are primarily used for \u003cstrong data-start=\"1308\" data-end=\"1336\"\u003einitial air purification\u003c\/strong\u003e. Depending on system requirements, they can function as:\u003c\/p\u003e\n\u003cul data-start=\"1395\" data-end=\"1567\"\u003e\n\u003cli data-start=\"1395\" data-end=\"1471\"\u003e\n\u003cp data-start=\"1397\" data-end=\"1471\"\u003e\u003cstrong data-start=\"1397\" data-end=\"1412\"\u003ePre-filters\u003c\/strong\u003e, extending the service life of higher-efficiency filters\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1472\" data-end=\"1567\"\u003e\n\u003cp data-start=\"1474\" data-end=\"1567\"\u003e\u003cstrong data-start=\"1474\" data-end=\"1490\"\u003eMain filters\u003c\/strong\u003e in simpler ventilation systems, depending on the selected filtration class\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1569\" data-end=\"1717\"\u003eThanks to their high dust holding capacity combined with low airflow resistance, cassette filters support efficient and economical system operation.\u003c\/p\u003e\n\u003cp data-start=\"1719\" data-end=\"1838\"\u003eAvailable filtration classes include \u003cstrong data-start=\"1756\" data-end=\"1777\"\u003eG3, G4, M5 and F7\u003c\/strong\u003e, making them suitable for a wide range of HVAC applications.\u003c\/p\u003e\n\u003chr data-start=\"1840\" data-end=\"1843\"\u003e\n\u003ch2 data-start=\"1845\" data-end=\"1874\"\u003eFilter media and materials\u003c\/h2\u003e\n\u003cp data-start=\"1876\" data-end=\"2062\"\u003eThe filtration media used in cassette filters is based on \u003cstrong data-start=\"1934\" data-end=\"1977\"\u003ehigh-quality synthetic polyester fibers\u003c\/strong\u003e with a progressive fiber structure. This design provides an optimal balance between:\u003c\/p\u003e\n\u003cul data-start=\"2064\" data-end=\"2183\"\u003e\n\u003cli data-start=\"2064\" data-end=\"2089\"\u003e\n\u003cp data-start=\"2066\" data-end=\"2089\"\u003eFiltration efficiency\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2090\" data-end=\"2115\"\u003e\n\u003cp data-start=\"2092\" data-end=\"2115\"\u003eDust holding capacity\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2116\" data-end=\"2137\"\u003e\n\u003cp data-start=\"2118\" data-end=\"2137\"\u003eLow pressure drop\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2138\" data-end=\"2183\"\u003e\n\u003cp data-start=\"2140\" data-end=\"2183\"\u003eStable airflow throughout filter lifetime\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2185\" data-end=\"2326\"\u003eIn selected variants, \u003cstrong data-start=\"2207\" data-end=\"2235\"\u003eglass fiber filter media\u003c\/strong\u003e is applied where additional rigidity or specific performance characteristics are required.\u003c\/p\u003e\n\u003chr data-start=\"2328\" data-end=\"2331\"\u003e\n\u003ch2 data-start=\"2333\" data-end=\"2357\"\u003eConstruction variants\u003c\/h2\u003e\n\u003cp data-start=\"2359\" data-end=\"2477\"\u003eCassette filters are available in multiple constructions to match different installation and performance requirements.\u003c\/p\u003e\n\u003ch3 data-start=\"2479\" data-end=\"2525\"\u003eCassette filters with pleated filter media\u003c\/h3\u003e\n\u003cp data-start=\"2526\" data-end=\"2662\"\u003eThese filters use a \u003cstrong data-start=\"2546\" data-end=\"2580\"\u003epleated (folded) filter medium\u003c\/strong\u003e, increasing the effective filtration surface and improving dust holding capacity.\u003c\/p\u003e\n\u003cul data-start=\"2664\" data-end=\"2961\"\u003e\n\u003cli data-start=\"2664\" data-end=\"2733\"\u003e\n\u003cp data-start=\"2666\" data-end=\"2733\"\u003eFrame made of \u003cstrong data-start=\"2680\" data-end=\"2706\"\u003egalvanized steel sheet\u003c\/strong\u003e for corrosion resistance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2734\" data-end=\"2799\"\u003e\n\u003cp data-start=\"2736\" data-end=\"2799\"\u003eFilter media machine-molded and thermoset at high temperature\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2800\" data-end=\"2876\"\u003e\n\u003cp data-start=\"2802\" data-end=\"2876\"\u003eHigh-quality adhesive ensures secure bonding, even at high airflow rates\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2877\" data-end=\"2961\"\u003e\n\u003cp data-start=\"2879\" data-end=\"2961\"\u003eReinforcement beams applied for larger dimensions to ensure structural stability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2963\" data-end=\"2966\"\u003e\n\u003ch3 data-start=\"2968\" data-end=\"3011\"\u003eCassette filters with flat filter media\u003c\/h3\u003e\n\u003cp data-start=\"3012\" data-end=\"3104\"\u003eFlat cassette filters are designed for applications requiring a simple, robust construction.\u003c\/p\u003e\n\u003cul data-start=\"3106\" data-end=\"3329\"\u003e\n\u003cli data-start=\"3106\" data-end=\"3150\"\u003e\n\u003cp data-start=\"3108\" data-end=\"3150\"\u003eFrame made of \u003cstrong data-start=\"3122\" data-end=\"3148\"\u003egalvanized steel sheet\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3151\" data-end=\"3213\"\u003e\n\u003cp data-start=\"3153\" data-end=\"3213\"\u003eFilter media positioned between two galvanized metal grids\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3214\" data-end=\"3279\"\u003e\n\u003cp data-start=\"3216\" data-end=\"3279\"\u003eGrids stabilize the filter media and maintain correct airflow\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3280\" data-end=\"3329\"\u003e\n\u003cp data-start=\"3282\" data-end=\"3329\"\u003eEntire assembly secured with breakable rivets\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3331\" data-end=\"3334\"\u003e\n\u003ch2 data-start=\"3336\" data-end=\"3359\"\u003eTypical applications\u003c\/h2\u003e\n\u003cp data-start=\"3361\" data-end=\"3460\"\u003eCassette filters are used in a wide variety of ventilation and air conditioning systems, including:\u003c\/p\u003e\n\u003cul data-start=\"3462\" data-end=\"3709\"\u003e\n\u003cli data-start=\"3462\" data-end=\"3472\"\u003e\n\u003cp data-start=\"3464\" data-end=\"3472\"\u003eHotels\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3473\" data-end=\"3493\"\u003e\n\u003cp data-start=\"3475\" data-end=\"3493\"\u003eOffice buildings\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3494\" data-end=\"3514\"\u003e\n\u003cp data-start=\"3496\" data-end=\"3514\"\u003eShopping centres\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3515\" data-end=\"3535\"\u003e\n\u003cp data-start=\"3517\" data-end=\"3535\"\u003ePublic buildings\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3536\" data-end=\"3574\"\u003e\n\u003cp data-start=\"3538\" data-end=\"3574\"\u003eControl rooms and control cabinets\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3575\" data-end=\"3612\"\u003e\n\u003cp data-start=\"3577\" data-end=\"3612\"\u003eServer rooms and technical spaces\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3613\" data-end=\"3640\"\u003e\n\u003cp data-start=\"3615\" data-end=\"3640\"\u003eHeat pump installations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3641\" data-end=\"3709\"\u003e\n\u003cp data-start=\"3643\" data-end=\"3709\"\u003eIndustrial facilities with standard air cleanliness requirements\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3711\" data-end=\"3830\"\u003eThey are suitable for \u003cstrong data-start=\"3733\" data-end=\"3783\"\u003eheating, cooling and ventilation installations\u003c\/strong\u003e across commercial and industrial environments.\u003c\/p\u003e\n\u003chr data-start=\"3832\" data-end=\"3835\"\u003e\n\u003ch2 data-start=\"3837\" data-end=\"3858\"\u003eSystem integration\u003c\/h2\u003e\n\u003cp data-start=\"3860\" data-end=\"4080\"\u003eCassette filters are typically installed as \u003cstrong data-start=\"3904\" data-end=\"3919\"\u003epre-filters\u003c\/strong\u003e, protecting higher-efficiency filtration stages such as compact or HEPA filters. In simpler HVAC systems, they may also serve as the primary filtration element.\u003c\/p\u003e\n\u003cp\u003e\u0026lt;p\u0026gt; In multi-stage HVAC systems, cassette filters are commonly used upstream of \u0026lt;a href=\"\/collections\/compact-filters\"\u0026gt;compact filters\u0026lt;\/a\u0026gt; or \u0026lt;a href=\"\/collections\/hepa-filters\"\u0026gt;HEPA filters\u0026lt;\/a\u0026gt; to extend service life and maintain system efficiency. \u0026lt;\/p\u0026gt;\u003c\/p\u003e\n\u003chr data-start=\"4348\" data-end=\"4351\"\u003e\n\u003ch2 data-start=\"4353\" data-end=\"4397\"\u003eCustom dimensions – manufactured to order\u003c\/h2\u003e\n\u003cp data-start=\"4399\" data-end=\"4525\"\u003eCassette filters supplied by Filtra International are \u003cstrong data-start=\"4453\" data-end=\"4478\"\u003emanufactured to order\u003c\/strong\u003e and can be delivered in \u003cstrong data-start=\"4503\" data-end=\"4524\"\u003ecustom dimensions\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul data-start=\"4527\" data-end=\"4669\"\u003e\n\u003cli data-start=\"4527\" data-end=\"4566\"\u003e\n\u003cp data-start=\"4529\" data-end=\"4566\"\u003eCustom length × width × height (mm)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4567\" data-end=\"4614\"\u003e\n\u003cp data-start=\"4569\" data-end=\"4614\"\u003eSuitable for retrofit and new installations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4615\" data-end=\"4669\"\u003e\n\u003cp data-start=\"4617\" data-end=\"4669\"\u003eCompatible with standard and bespoke HVAC housings\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"4671\" data-end=\"4755\"\u003eThis flexibility ensures reliable integration into virtually any ventilation system.\u003c\/p\u003e\n\u003chr data-start=\"4757\" data-end=\"4760\"\u003e\n\u003ch2 data-start=\"4762\" data-end=\"4795\"\u003eManufacturing origin \u0026amp; quality\u003c\/h2\u003e\n\u003cp data-start=\"4797\" data-end=\"4888\"\u003eCassette filters supplied by Filtra International are \u003cstrong data-start=\"4851\" data-end=\"4877\"\u003emanufactured in Europe\u003c\/strong\u003e, ensuring:\u003c\/p\u003e\n\u003cul data-start=\"4890\" data-end=\"5017\"\u003e\n\u003cli data-start=\"4890\" data-end=\"4923\"\u003e\n\u003cp data-start=\"4892\" data-end=\"4923\"\u003eConsistent production quality\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4924\" data-end=\"4976\"\u003e\n\u003cp data-start=\"4926\" data-end=\"4976\"\u003eCompliance with European manufacturing standards\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4977\" data-end=\"5017\"\u003e\n\u003cp data-start=\"4979\" data-end=\"5017\"\u003eReliable supply and short lead times\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"5019\" data-end=\"5022\"\u003e\n\u003ch2 data-start=\"5024\" data-end=\"5060\"\u003eProduct configuration \u0026amp; quotation\u003c\/h2\u003e\n\u003cp data-start=\"5062\" data-end=\"5144\"\u003eCassette filters are supplied on a \u003cstrong data-start=\"5097\" data-end=\"5116\"\u003equotation basis\u003c\/strong\u003e, allowing configuration of:\u003c\/p\u003e\n\u003cul data-start=\"5146\" data-end=\"5300\"\u003e\n\u003cli data-start=\"5146\" data-end=\"5187\"\u003e\n\u003cp data-start=\"5148\" data-end=\"5187\"\u003eFilter construction (flat or pleated)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"5188\" data-end=\"5209\"\u003e\n\u003cp data-start=\"5190\" data-end=\"5209\"\u003eFilter media type\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"5210\" data-end=\"5247\"\u003e\n\u003cp data-start=\"5212\" data-end=\"5247\"\u003eFiltration class (G3, G4, M5, F7)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"5248\" data-end=\"5266\"\u003e\n\u003cp data-start=\"5250\" data-end=\"5266\"\u003eFrame material\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"5267\" data-end=\"5300\"\u003e\n\u003cp data-start=\"5269\" data-end=\"5300\"\u003eExact dimensions and quantity\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What are cassette air filters used for?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Cassette air filters are used as pre-filters or main filters in ventilation and air conditioning systems to remove coarse and medium airborne contaminants.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Which filtration classes are available for cassette filters?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Cassette filters are available in filtration classes G3, G4, M5 and F7, suitable for standard and moderate air cleanliness requirements.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can cassette filters be supplied in custom dimensions?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, cassette filters are manufactured to order and can be supplied in custom dimensions to fit specific HVAC systems.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n","brand":"Filtra International","offers":[{"title":"Flat cassette filter \/ Synthetic fiber \/ G3","offer_id":55683367338310,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"Flat cassette filter \/ Synthetic fiber \/ G4","offer_id":55683367371078,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"Flat cassette filter \/ Synthetic fiber \/ M5","offer_id":55683367403846,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"Flat cassette filter \/ Synthetic fiber \/ F7","offer_id":55683367436614,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"Flat cassette filter \/ Glass fiber \/ G3","offer_id":55683367469382,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"Flat cassette filter \/ Glass fiber \/ G4","offer_id":55683367502150,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"Flat cassette filter \/ Glass fiber \/ M5","offer_id":55683367534918,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"Flat cassette filter \/ Glass fiber \/ F7","offer_id":55683367567686,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"Pleated cassette filter \/ Synthetic fiber \/ G3","offer_id":55683367600454,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"Pleated cassette filter \/ Synthetic fiber \/ G4","offer_id":55683367633222,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"Pleated cassette filter \/ Synthetic fiber \/ M5","offer_id":55683367665990,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"Pleated cassette filter \/ Synthetic fiber \/ F7","offer_id":55683367698758,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"Pleated cassette filter \/ Glass fiber \/ G3","offer_id":55683367731526,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"Pleated cassette filter \/ Glass fiber \/ G4","offer_id":55683367764294,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"Pleated cassette filter \/ Glass fiber \/ M5","offer_id":55683367797062,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"Pleated cassette filter \/ Glass fiber \/ F7","offer_id":55683367829830,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0975\/2985\/6326\/files\/cassette-air-filters.png?v=1766422578","url":"https:\/\/filtrainternational.com\/products\/cassette-air-filters","provider":"Filtra International","version":"1.0","type":"link"}