{"product_id":"24x24x4-koch-micromax-fm-single-header-merv-11-120-722-001","title":"24x24x4 Koch MicroMAX FM Single Header MERV 11 120-722-001 (3 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 24″ × 4″\u003c\/strong\u003e \u003cstrong\u003eKoch MicroMAX FM\u003c\/strong\u003e filter (part number 120-722-001) delivers \u003cstrong\u003eMERV 11\u003c\/strong\u003e filtration in a compact 4-inch-deep minipleat design with a \u003cstrong\u003egalvanized metal frame and single metal header for side-access housings\u003c\/strong\u003e.\u003c\/p\u003e\u003cp\u003eThe FM (Single Header) configuration is built specifically for commercial air handlers where filters slide in from the side rather than the front. The header rail guides the filter into the housing track and seals against the housing gasket on installation. Otherwise, this is the same MicroMAX construction trusted in commercial HVAC: \u003cstrong\u003e120 sq ft\u003c\/strong\u003e of micro fiberglass media in a \u003cstrong\u003e4″ depth\u003c\/strong\u003e, with the dual-density media (coarse upstream, fine downstream) and water-repellent binder that hold up under variable airflow and humidity.\u003c\/p\u003e\u003ch3\u003eWhen MicroMAX FM is specified\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSide-access air handler housings\u003c\/strong\u003e — the metal header is the standard interface for side-loaded commercial AHUs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigher-temperature applications\u003c\/strong\u003e — galvanized metal frame handles up to 200°F \/ 93°C, well above the 150°F limit of beverage board frames\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable-air-volume (VAV) commercial HVAC\u003c\/strong\u003e — rigid construction maintains performance under airflow swings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHospitals, pharmaceutical, and lab facilities\u003c\/strong\u003e — proven media reliability in critical IAQ environments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAggressive maintenance environments\u003c\/strong\u003e — metal frame and header survive rough changeouts in tight or hard-to-access housings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-filter for HEPA stages\u003c\/strong\u003e — common upstream filtration ahead of cleanroom or critical-environment HEPA filters\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDesign and construction\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Micro fiberglass paper, dual-density (coarse upstream, fine downstream)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBinder:\u003c\/strong\u003e Water-repellent formulation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Galvanized metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeader:\u003c\/strong\u003e Single metal header (FM) — for side-access housings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Extended-surface minipleat with bonded die-cut supports\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia area:\u003c\/strong\u003e 120 sq ft\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 11 per ASHRAE 52.2-2007\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum operating temperature:\u003c\/strong\u003e 200°F \/ 93°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum face velocity:\u003c\/strong\u003e 125% of rated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eListings:\u003c\/strong\u003e UL Classified Class 2 per UL Standard 900\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack size:\u003c\/strong\u003e 3 filters per case\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat MERV 11 captures\u003c\/h3\u003e\u003cp\u003eCaptures fine dust, smoke, auto fumes, and most airborne particles down to 1 micron. A strong general-purpose efficiency for offices, schools, hotels, and light industrial.\u003c\/p\u003e\u003ch3\u003eFM (Single Header) vs. headerless MicroMAX\u003c\/h3\u003e\u003cp\u003eIf your housing accepts standard front-loaded filters, the headerless MicroMAX (with either beverage board or galvanized metal frame) is typically the right choice. Choose the \u003cstrong\u003eFM Single Header\u003c\/strong\u003e when your air handler is built for side-loaded filters and requires the metal header for installation and sealing. Replacing an existing FM filter? Match it with the FM variant; the headerless options will not seat correctly in side-access housings.\u003c\/p\u003e\u003ch3\u003eUse with a prefilter for maximum performance\u003c\/h3\u003e\u003cp\u003ePer Koch’s recommendation, MicroMAX filters perform best when paired with an upstream prefilter that captures coarse debris before it reaches the high-MERV minipleat media. This extends MicroMAX service life and lowers total cost of ownership in dust-loaded environments.\u003c\/p\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eThe MicroMAX FM is interchangeable with most competitive single-header 4″-deep minipleat filters in the same nominal size. Width and height dimensions are interchangeable on the underlying media pack — the metal header determines the sealing edge orientation.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":44118783459450,"sku":"120-722-001","price":665.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_3be50d7c-f074-45e2-b3ba-add572ee1673.png?v=1777659796","url":"https:\/\/www.rememberthefilter.com\/products\/24x24x4-koch-micromax-fm-single-header-merv-11-120-722-001","provider":"RememberTheFilter.com","version":"1.0","type":"link"}