{"product_id":"20x20x4-koch-micromax-metal-merv-14-120-730-004","title":"20x20x4 Koch MicroMAX Galvanized Metal Frame MERV 14 120-730-004 (3 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 20″ × 4″\u003c\/strong\u003e \u003cstrong\u003eKoch MicroMAX\u003c\/strong\u003e filter (part number 120-730-004) delivers \u003cstrong\u003eMERV 14\u003c\/strong\u003e filtration in a compact 4-inch-deep minipleat design with a \u003cstrong\u003egalvanized metal frame (NHM)\u003c\/strong\u003e rated for operation up to \u003cstrong\u003e200°F \/ 93°C\u003c\/strong\u003e — the higher-temperature, heavy-duty option in the MicroMAX line.\u003c\/p\u003e\u003cp\u003eThe MicroMAX packs \u003cstrong\u003e120 sq ft\u003c\/strong\u003e of micro fiberglass media into a \u003cstrong\u003e4″ depth\u003c\/strong\u003e at just \u003cstrong\u003e7 lbs\u003c\/strong\u003e each — comparable media area to filters three times the depth and weight. The dual-density media construction (coarse fibers upstream, fine fibers downstream) maintains high dust holding capacity and extends filter life, while the water-repellent binder handles humidity without media degradation.\u003c\/p\u003e\u003ch3\u003eWhen MicroMAX is specified\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-inch filter slots\u003c\/strong\u003e — commercial air handlers and AHU housings sized for shallower depth filters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-velocity systems\u003c\/strong\u003e — operates up to 125% of rated face velocity\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\u003ePre-filter for HEPA stages\u003c\/strong\u003e — common upstream filtration ahead of cleanroom or critical-environment HEPA filters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage- and weight-conscious facilities\u003c\/strong\u003e — 3-per-carton packaging and 7-lb filter weight reduce shipping and handling cost vs deeper alternatives\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 (NHM)\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 14 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\u003ePleat orientation:\u003c\/strong\u003e Width and height are interchangeable; pleats can be installed in either direction\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 14 captures\u003c\/h3\u003e\u003cp\u003eVery high-efficiency filtration capturing most sub-micron particles including smoke, bacteria, and many viruses. Specified in hospitals, surgical suites, pharmaceutical, and demanding cleanroom pre-filter applications.\u003c\/p\u003e\u003ch3\u003eBeverage board vs. galvanized metal frame\u003c\/h3\u003e\u003cp\u003eThe MicroMAX comes in two frame configurations. The \u003cstrong\u003ebeverage board frame\u003c\/strong\u003e is high-density paperboard — lightweight, cost-effective, and rated to 150°F. The \u003cstrong\u003egalvanized metal (NHM) frame\u003c\/strong\u003e handles temperatures up to 200°F and stands up to demanding industrial environments where a paperboard frame would degrade. Choose beverage board for standard commercial HVAC; choose metal when the application sees elevated temperatures, aggressive handling, or extended exposure to humidity.\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 drops into standard 4″-deep filter slots and is interchangeable with most competitive 4-inch minipleat filters in the same nominal size. The compact form factor and lightweight construction make it easier to handle and store than 12″-deep alternatives with comparable media area.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":44118779199610,"sku":"120-730-004","price":626.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_376eec6d-11d5-43a7-ba46-928015b64583.png?v=1777659399","url":"https:\/\/www.rememberthefilter.com\/products\/20x20x4-koch-micromax-metal-merv-14-120-730-004","provider":"RememberTheFilter.com","version":"1.0","type":"link"}