{"title":"Koch MicroMAX High-Efficiency Bag Filters | Critical Commercial","description":"\u003cp\u003eKoch \u003cstrong\u003eMicroMAX\u003c\/strong\u003e is the high-efficiency pocket filter line for critical commercial applications — hospitals, pharmaceutical manufacturing, semiconductor manufacturing, and high-occupancy commercial buildings where general-purpose bag filters fall short. \u003cstrong\u003eMicroMAX\u003c\/strong\u003e standard, \u003cstrong\u003eMicroMAX PL6\u003c\/strong\u003e (six-pocket), \u003cstrong\u003eMicroMAX PL4S\u003c\/strong\u003e (four-pocket S series), and \u003cstrong\u003eMicroMAX EDGE\u003c\/strong\u003e configurations cover MERV 13 through MERV 15 final-stage applications. Synthetic media construction tolerates higher humidity than fiberglass and resists media migration. 30″ to 36″ deep pockets pack significant media area into compact AHU footprints. Used as final-stage filtration after Multi-Pleat or Multi-Cell prefiltration.\u003c\/p\u003e","products":[{"product_id":"24x24x4-koch-micromax-beverage-board-merv-14-120-700-001","title":"24x24x4 Koch MicroMAX Beverage Board Frame MERV 14 120-700-001 (3 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 24″ × 4″\u003c\/strong\u003e \u003cstrong\u003eKoch MicroMAX\u003c\/strong\u003e filter (part number 120-700-001) delivers \u003cstrong\u003eMERV 14\u003c\/strong\u003e filtration in a compact 4-inch-deep minipleat design with a \u003cstrong\u003estandard beverage board frame\u003c\/strong\u003e — the lightweight, cost-effective option for general commercial HVAC at operating temperatures up to \u003cstrong\u003e150°F \/ 66°C\u003c\/strong\u003e.\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 Beverage Board (BB)\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 150°F \/ 66°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":44118778806394,"sku":"120-700-001","price":430.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_91f0b317-0a3a-43cc-bd5a-135572fe3d89.png?v=1777659350"},{"product_id":"24x24x4-koch-micromax-metal-merv-14-120-730-001","title":"24x24x4 Koch MicroMAX Galvanized Metal Frame MERV 14 120-730-001 (3 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 24″ × 4″\u003c\/strong\u003e \u003cstrong\u003eKoch MicroMAX\u003c\/strong\u003e filter (part number 120-730-001) 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":44118778839162,"sku":"120-730-001","price":677.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_418f1501-c44c-4d98-b520-20e4836355ba.png?v=1777659356"},{"product_id":"20x25x4-koch-micromax-beverage-board-merv-14-120-700-002","title":"20x25x4 Koch MicroMAX Beverage Board Frame MERV 14 120-700-002 (3 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 25″ × 4″\u003c\/strong\u003e \u003cstrong\u003eKoch MicroMAX\u003c\/strong\u003e filter (part number 120-700-002) delivers \u003cstrong\u003eMERV 14\u003c\/strong\u003e filtration in a compact 4-inch-deep minipleat design with a \u003cstrong\u003estandard beverage board frame\u003c\/strong\u003e — the lightweight, cost-effective option for general commercial HVAC at operating temperatures up to \u003cstrong\u003e150°F \/ 66°C\u003c\/strong\u003e.\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 Beverage Board (BB)\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 150°F \/ 66°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":44118778937466,"sku":"120-700-002","price":430.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_62b165a5-149d-44f3-b766-bcd76be78290.png?v=1777659363"},{"product_id":"20x25x4-koch-micromax-metal-merv-14-120-730-002","title":"20x25x4 Koch MicroMAX Galvanized Metal Frame MERV 14 120-730-002 (3 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 25″ × 4″\u003c\/strong\u003e \u003cstrong\u003eKoch MicroMAX\u003c\/strong\u003e filter (part number 120-730-002) 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. 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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":44118779068538,"sku":"120-730-003","price":756.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_70ff406d-1531-40f1-8826-985e0c4ab223.png?v=1777659383"},{"product_id":"20x20x4-koch-micromax-beverage-board-merv-14-120-700-004","title":"20x20x4 Koch MicroMAX Beverage Board Frame MERV 14 120-700-004 (3 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 20″ × 4″\u003c\/strong\u003e \u003cstrong\u003eKoch MicroMAX\u003c\/strong\u003e filter (part number 120-700-004) delivers \u003cstrong\u003eMERV 14\u003c\/strong\u003e filtration in a compact 4-inch-deep minipleat design with a \u003cstrong\u003estandard beverage board frame\u003c\/strong\u003e — the lightweight, cost-effective option for general commercial HVAC at operating temperatures up to \u003cstrong\u003e150°F \/ 66°C\u003c\/strong\u003e.\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. 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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. 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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. 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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. 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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. 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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. 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Specified in healthcare, clinics, labs, and high-IAQ commercial spaces.\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. 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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":44118779953274,"sku":"120-731-002","price":710.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_3a26241a-607d-41e8-96b0-e5418325b4bc.png?v=1777659494"},{"product_id":"20x24x4-koch-micromax-beverage-board-merv-13-120-701-003","title":"20x24x4 Koch MicroMAX Beverage Board Frame MERV 13 120-701-003 (3 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 24″ × 4″\u003c\/strong\u003e \u003cstrong\u003eKoch MicroMAX\u003c\/strong\u003e filter (part number 120-701-003) delivers \u003cstrong\u003eMERV 13\u003c\/strong\u003e filtration in a compact 4-inch-deep minipleat design with a \u003cstrong\u003estandard beverage board frame\u003c\/strong\u003e — the lightweight, cost-effective option for general commercial HVAC at operating temperatures up to \u003cstrong\u003e150°F \/ 66°C\u003c\/strong\u003e.\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. 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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. 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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. 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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. 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Specified in healthcare, clinics, labs, and high-IAQ commercial spaces.\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. 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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. 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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. 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Specified in healthcare, clinics, labs, and high-IAQ commercial spaces.\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. 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A strong general-purpose efficiency for offices, schools, hotels, and light industrial.\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. 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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 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\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 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\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":44118780805242,"sku":"120-732-001","price":632.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_7737a332-2e87-470a-aeb4-dff42af6fdab.png?v=1777659589"},{"product_id":"20x25x4-koch-micromax-beverage-board-merv-11-120-702-002","title":"20x25x4 Koch MicroMAX Beverage Board Frame MERV 11 120-702-002 (3 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 25″ × 4″\u003c\/strong\u003e \u003cstrong\u003eKoch MicroMAX\u003c\/strong\u003e filter (part number 120-702-002) delivers \u003cstrong\u003eMERV 11\u003c\/strong\u003e filtration in a compact 4-inch-deep minipleat design with a \u003cstrong\u003estandard beverage board frame\u003c\/strong\u003e — the lightweight, cost-effective option for general commercial HVAC at operating temperatures up to \u003cstrong\u003e150°F \/ 66°C\u003c\/strong\u003e.\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. 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A strong general-purpose efficiency for offices, schools, hotels, and light industrial.\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. 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A strong general-purpose efficiency for offices, schools, hotels, and light industrial.\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. 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A strong general-purpose efficiency for offices, schools, hotels, and light industrial.\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. 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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 Beverage Board (BB)\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 150°F \/ 66°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 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\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. 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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 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\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 11 captures\u003c\/h3\u003e\u003cp\u003eCaptures fine dust, smoke, auto fumes, and most airborne particles down to 1 micron. 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A strong general-purpose efficiency for offices, schools, hotels, and light industrial.\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":44118781165690,"sku":"120-702-005","price":338.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_3c58eb91-d53c-4ccb-8032-a34526c3e526.png?v=1777659633"},{"product_id":"18x24x4-koch-micromax-metal-merv-11-120-732-005","title":"18x24x4 Koch MicroMAX Galvanized Metal Frame MERV 11 120-732-005 (3 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e18″ × 24″ × 4″\u003c\/strong\u003e \u003cstrong\u003eKoch MicroMAX\u003c\/strong\u003e filter (part number 120-732-005) delivers \u003cstrong\u003eMERV 11\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. 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A strong general-purpose efficiency for offices, schools, hotels, and light industrial.\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. 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A strong general-purpose efficiency for offices, schools, hotels, and light industrial.\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. 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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 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\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 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\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":44118781263994,"sku":"120-732-006","price":657.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_8c4e2e63-c02a-4135-8054-5ce3eb87b16c.png?v=1777659647"},{"product_id":"16x20x4-koch-micromax-beverage-board-merv-11-120-702-007","title":"16x20x4 Koch MicroMAX Beverage Board Frame MERV 11 120-702-007 (3 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e16″ × 20″ × 4″\u003c\/strong\u003e \u003cstrong\u003eKoch MicroMAX\u003c\/strong\u003e filter (part number 120-702-007) delivers \u003cstrong\u003eMERV 11\u003c\/strong\u003e filtration in a compact 4-inch-deep minipleat design with a \u003cstrong\u003estandard beverage board frame\u003c\/strong\u003e — the lightweight, cost-effective option for general commercial HVAC at operating temperatures up to \u003cstrong\u003e150°F \/ 66°C\u003c\/strong\u003e.\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 Beverage Board (BB)\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 150°F \/ 66°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 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\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":44118781329530,"sku":"120-702-007","price":275.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_b615c881-49c7-4a3c-98a0-ac6cb5aa9010.png?v=1777659653"},{"product_id":"16x20x4-koch-micromax-metal-merv-11-120-732-007","title":"16x20x4 Koch MicroMAX Galvanized Metal Frame MERV 11 120-732-007 (3 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e16″ × 20″ × 4″\u003c\/strong\u003e \u003cstrong\u003eKoch MicroMAX\u003c\/strong\u003e filter (part number 120-732-007) delivers \u003cstrong\u003eMERV 11\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 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\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 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\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":44118781362298,"sku":"120-732-007","price":572.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_a59aae90-716e-4795-af86-68388100f40a.png?v=1777659656"},{"product_id":"12x24x4-koch-micromax-beverage-board-merv-11-120-702-008","title":"12x24x4 Koch MicroMAX Beverage Board Frame MERV 11 120-702-008 (6 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e12″ × 24″ × 4″\u003c\/strong\u003e \u003cstrong\u003eKoch MicroMAX\u003c\/strong\u003e filter (part number 120-702-008) delivers \u003cstrong\u003eMERV 11\u003c\/strong\u003e filtration in a compact 4-inch-deep minipleat design with a \u003cstrong\u003estandard beverage board frame\u003c\/strong\u003e — the lightweight, cost-effective option for general commercial HVAC at operating temperatures up to \u003cstrong\u003e150°F \/ 66°C\u003c\/strong\u003e.\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 Beverage Board (BB)\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 150°F \/ 66°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 6 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\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":44118781395066,"sku":"120-702-008","price":508.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_311e0b1d-b35a-4877-a504-7eea648cc854.png?v=1777659661"},{"product_id":"12x24x4-koch-micromax-metal-merv-11-120-732-008","title":"12x24x4 Koch MicroMAX Galvanized Metal Frame MERV 11 120-732-008 (6 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e12″ × 24″ × 4″\u003c\/strong\u003e \u003cstrong\u003eKoch MicroMAX\u003c\/strong\u003e filter (part number 120-732-008) delivers \u003cstrong\u003eMERV 11\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 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\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 6 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\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":44118781493370,"sku":"120-732-008","price":985.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_2c250921-46c6-4de1-8f2d-1b8a457cfef6.png?v=1777659664"},{"product_id":"24x24x4-koch-micromax-fm-single-header-merv-14-120-720-001","title":"24x24x4 Koch MicroMAX FM Single Header MERV 14 120-720-001 (3 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 24″ × 4″\u003c\/strong\u003e \u003cstrong\u003eKoch MicroMAX FM\u003c\/strong\u003e filter (part number 120-720-001) delivers \u003cstrong\u003eMERV 14\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 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\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\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":44118781689978,"sku":"120-720-001","price":710.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_55cb3f1e-cbaa-4c22-a687-600791a85ff9.png?v=1777659704"},{"product_id":"20x24x4-koch-micromax-fm-single-header-merv-14-120-720-002","title":"20x24x4 Koch MicroMAX FM Single Header MERV 14 120-720-002 (3 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 24″ × 4″\u003c\/strong\u003e \u003cstrong\u003eKoch MicroMAX FM\u003c\/strong\u003e filter (part number 120-720-002) delivers \u003cstrong\u003eMERV 14\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 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\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\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":44118781722746,"sku":"120-720-002","price":841.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_40f74b2e-84e3-4ce9-b474-24a50cfdd7c6.png?v=1777659711"}],"url":"https:\/\/www.rememberthefilter.com\/collections\/koch-micromax-bag-filters.oembed","provider":"RememberTheFilter.com","version":"1.0","type":"link"}