{"title":"Koch Multi-Flo \u0026 Multi-Sak Bag Filters | Series S \u0026 G","description":"\u003cp\u003eKoch \u003cstrong\u003eMulti-Sak\u003c\/strong\u003e and \u003cstrong\u003eMulti-Flo\u003c\/strong\u003e are the extended-surface pocket filter lines for general commercial and industrial air handler service. \u003cstrong\u003eMulti-Sak 45\/65\/85\/95 Series S\u003c\/strong\u003e covers MERV 9 through MERV 14 across standard commercial AHU applications. \u003cstrong\u003eMulti-Sak Series G\u003c\/strong\u003e uses upgraded media for higher-efficiency requirements. \u003cstrong\u003eMulti-Flo Series S\u003c\/strong\u003e and \u003cstrong\u003eSeries G\u003c\/strong\u003e handle higher-velocity AHUs where standard pocket filters can't maintain efficiency. Bag construction packs extended media area into a compact face dimension, dramatically extending service intervals over equivalent pleated panels and lowering total fan energy use across the filter's service life.\u003c\/p\u003e","products":[{"product_id":"24x24x12-multi-flo-synthetic-extended-surface-rigid-cartridge-nhm-no-header-merv-15-112-650-001-1-filter","title":"24x24x12 Koch Multi-Flo Synthetic Rigid Cartridge MERV 15 No Header 112-650-001 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 24″ × 12″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-650-001) is a \u003cstrong\u003eMERV 15\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e No Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 15 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 15 captures\u003c\/h3\u003e\n\u003cp\u003eVery high-efficiency commercial filtration: captures most sub-micron particles including smoke and bacteria. MERV 15 is typically installed in commercial air handlers purpose-built for high-efficiency media, or as a final filter in multi-stage filtration systems. Not appropriate for standard residential HVAC without system modification.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937711489146,"sku":"112-650-001","price":159.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_a115ed1b-88b7-4ca1-b367-a476b2fed7b7.png?v=1742162076"},{"product_id":"24x12x12-multi-flo-synthetic-extended-surface-rigid-cartridge-nhm-no-header-merv-15-112-650-002-2-filter","title":"24x12x12 Koch Multi-Flo Synthetic Rigid Cartridge MERV 15 No Header 112-650-002 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 12″ × 12″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-650-002) is a \u003cstrong\u003eMERV 15\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e No Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 15 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 15 captures\u003c\/h3\u003e\n\u003cp\u003eVery high-efficiency commercial filtration: captures most sub-micron particles including smoke and bacteria. MERV 15 is typically installed in commercial air handlers purpose-built for high-efficiency media, or as a final filter in multi-stage filtration systems. Not appropriate for standard residential HVAC without system modification.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937711521914,"sku":"112-650-002","price":270.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_387cba8e-7f59-4fec-aa0c-6f3b078fd8b4.png?v=1742162083"},{"product_id":"24x24x6-multi-flo-synthetic-extended-surface-rigid-cartridge-nhm-no-header-merv-15-112-650-003-2-filter","title":"24x24x6 Koch Multi-Flo Synthetic Rigid Cartridge MERV 15 No Header 112-650-003 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 24″ × 6″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-650-003) is a \u003cstrong\u003eMERV 15\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e No Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 15 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 15 captures\u003c\/h3\u003e\n\u003cp\u003eVery high-efficiency commercial filtration: captures most sub-micron particles including smoke and bacteria. MERV 15 is typically installed in commercial air handlers purpose-built for high-efficiency media, or as a final filter in multi-stage filtration systems. Not appropriate for standard residential HVAC without system modification.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937711554682,"sku":"112-650-003","price":289.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_12f4cd8e-7160-43de-90a8-1d378a72001f.png?v=1742162090"},{"product_id":"24x12x6-multi-flo-synthetic-extended-surface-rigid-cartridge-nhm-no-header-merv-15-112-650-004-4-filter","title":"24x12x6 Koch Multi-Flo Synthetic Rigid Cartridge MERV 15 No Header 112-650-004 (4 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 12″ × 6″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-650-004) is a \u003cstrong\u003eMERV 15\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e No Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 15 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 15 captures\u003c\/h3\u003e\n\u003cp\u003eVery high-efficiency commercial filtration: captures most sub-micron particles including smoke and bacteria. MERV 15 is typically installed in commercial air handlers purpose-built for high-efficiency media, or as a final filter in multi-stage filtration systems. Not appropriate for standard residential HVAC without system modification.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937711587450,"sku":"112-650-004","price":497.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_bfee8b28-a796-4a12-ae8f-55dc6aaf33aa.png?v=1742162098"},{"product_id":"20x20x12-multi-flo-synthetic-extended-surface-rigid-cartridge-nhm-no-header-merv-15-112-650-005-1-filter","title":"20x20x12 Koch Multi-Flo Synthetic Rigid Cartridge MERV 15 No Header 112-650-005 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 20″ × 12″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-650-005) is a \u003cstrong\u003eMERV 15\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e No Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 15 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 15 captures\u003c\/h3\u003e\n\u003cp\u003eVery high-efficiency commercial filtration: captures most sub-micron particles including smoke and bacteria. MERV 15 is typically installed in commercial air handlers purpose-built for high-efficiency media, or as a final filter in multi-stage filtration systems. Not appropriate for standard residential HVAC without system modification.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937711620218,"sku":"112-650-005","price":162.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_4c2f5f07-9580-4d54-8a15-52c40fddd4dd.png?v=1742162105"},{"product_id":"24x20x12-multi-flo-synthetic-extended-surface-rigid-cartridge-nhm-no-header-merv-15-112-650-006-1-filter","title":"24x20x12 Koch Multi-Flo Synthetic Rigid Cartridge MERV 15 No Header 112-650-006 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 20″ × 12″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-650-006) is a \u003cstrong\u003eMERV 15\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e No Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 15 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 15 captures\u003c\/h3\u003e\n\u003cp\u003eVery high-efficiency commercial filtration: captures most sub-micron particles including smoke and bacteria. MERV 15 is typically installed in commercial air handlers purpose-built for high-efficiency media, or as a final filter in multi-stage filtration systems. Not appropriate for standard residential HVAC without system modification.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937711652986,"sku":"112-650-006","price":170.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_63186186-a5cf-415c-974a-e1605456f37f.png?v=1742162112"},{"product_id":"24x20x6-multi-flo-synthetic-extended-surface-rigid-cartridge-nhm-no-header-merv-15-112-650-007-2-filter","title":"24x20x6 Koch Multi-Flo Synthetic Rigid Cartridge MERV 15 No Header 112-650-007 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 20″ × 6″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-650-007) is a \u003cstrong\u003eMERV 15\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e No Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 15 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 15 captures\u003c\/h3\u003e\n\u003cp\u003eVery high-efficiency commercial filtration: captures most sub-micron particles including smoke and bacteria. MERV 15 is typically installed in commercial air handlers purpose-built for high-efficiency media, or as a final filter in multi-stage filtration systems. Not appropriate for standard residential HVAC without system modification.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937711685754,"sku":"112-650-007","price":303.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_93b1a525-f6c8-42c9-a3c8-36b380141f45.png?v=1759429912"},{"product_id":"20x20x6-multi-flo-synthetic-extended-surface-rigid-cartridge-nhm-no-header-merv-15-112-650-008-2-filter","title":"20x20x6 Koch Multi-Flo Synthetic Rigid Cartridge MERV 15 No Header 112-650-008 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 20″ × 6″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-650-008) is a \u003cstrong\u003eMERV 15\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e No Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 15 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 15 captures\u003c\/h3\u003e\n\u003cp\u003eVery high-efficiency commercial filtration: captures most sub-micron particles including smoke and bacteria. MERV 15 is typically installed in commercial air handlers purpose-built for high-efficiency media, or as a final filter in multi-stage filtration systems. Not appropriate for standard residential HVAC without system modification.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937711718522,"sku":"112-650-008","price":295.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_9188df2c-0298-4a00-946b-e8273ffd51c1.png?v=1742162128"},{"product_id":"24x24x12-multi-flo-synthetic-extended-surface-rigid-cartridge-fm-single-header-merv-15-112-660-001-1-filter","title":"24x24x12 Koch Multi-Flo Synthetic Rigid Cartridge MERV 15 Single Header 112-660-001 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 24″ × 12″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-660-001) is a \u003cstrong\u003eMERV 15\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e Single Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 15 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 15 captures\u003c\/h3\u003e\n\u003cp\u003eVery high-efficiency commercial filtration: captures most sub-micron particles including smoke and bacteria. MERV 15 is typically installed in commercial air handlers purpose-built for high-efficiency media, or as a final filter in multi-stage filtration systems. Not appropriate for standard residential HVAC without system modification.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937711751290,"sku":"112-660-001","price":168.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_27fb0a3b-a227-44b8-830f-2bd2470bba3f.png?v=1742162135"},{"product_id":"24x12x12-multi-flo-synthetic-extended-surface-rigid-cartridge-fm-single-header-merv-15-112-660-002-2-filter","title":"24x12x12 Koch Multi-Flo Synthetic Rigid Cartridge MERV 15 Single Header 112-660-002 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 12″ × 12″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-660-002) is a \u003cstrong\u003eMERV 15\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e Single Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 15 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 15 captures\u003c\/h3\u003e\n\u003cp\u003eVery high-efficiency commercial filtration: captures most sub-micron particles including smoke and bacteria. MERV 15 is typically installed in commercial air handlers purpose-built for high-efficiency media, or as a final filter in multi-stage filtration systems. Not appropriate for standard residential HVAC without system modification.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937711784058,"sku":"112-660-002","price":561.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_70f6d97a-1754-4b98-9611-185f277b21c3.png?v=1742162142"},{"product_id":"24x24x6-multi-flo-synthetic-extended-surface-rigid-cartridge-fm-single-header-merv-15-112-660-003-2-filter","title":"24x24x6 Koch Multi-Flo Synthetic Rigid Cartridge MERV 15 Single Header 112-660-003 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 24″ × 6″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-660-003) is a \u003cstrong\u003eMERV 15\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e Single Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 15 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 15 captures\u003c\/h3\u003e\n\u003cp\u003eVery high-efficiency commercial filtration: captures most sub-micron particles including smoke and bacteria. MERV 15 is typically installed in commercial air handlers purpose-built for high-efficiency media, or as a final filter in multi-stage filtration systems. Not appropriate for standard residential HVAC without system modification.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937711816826,"sku":"112-660-003","price":316.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_1e3e5eb7-333e-4a08-9a8c-3557e6787034.png?v=1759429913"},{"product_id":"24x12x6-multi-flo-synthetic-extended-surface-rigid-cartridge-fm-single-header-merv-15-112-660-004-4-filter","title":"24x12x6 Koch Multi-Flo Synthetic Rigid Cartridge MERV 15 Single Header 112-660-004 (4 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 12″ × 6″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-660-004) is a \u003cstrong\u003eMERV 15\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e Single Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 15 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 15 captures\u003c\/h3\u003e\n\u003cp\u003eVery high-efficiency commercial filtration: captures most sub-micron particles including smoke and bacteria. MERV 15 is typically installed in commercial air handlers purpose-built for high-efficiency media, or as a final filter in multi-stage filtration systems. Not appropriate for standard residential HVAC without system modification.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937711849594,"sku":"112-660-004","price":542.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_1a9e60e3-b7bd-49cf-b63c-3bb982f5cc8e.png?v=1759429913"},{"product_id":"20x20x12-multi-flo-synthetic-extended-surface-rigid-cartridge-fm-single-header-merv-15-112-660-005-1-filter","title":"20x20x12 Koch Multi-Flo Synthetic Rigid Cartridge MERV 15 Single Header 112-660-005 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 20″ × 12″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-660-005) is a \u003cstrong\u003eMERV 15\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e Single Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 15 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 15 captures\u003c\/h3\u003e\n\u003cp\u003eVery high-efficiency commercial filtration: captures most sub-micron particles including smoke and bacteria. MERV 15 is typically installed in commercial air handlers purpose-built for high-efficiency media, or as a final filter in multi-stage filtration systems. Not appropriate for standard residential HVAC without system modification.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937711882362,"sku":"112-660-005","price":173.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_cb0c2d40-648a-420f-af4e-961160704cfd.png?v=1742162162"},{"product_id":"24x20x12-multi-flo-synthetic-extended-surface-rigid-cartridge-fm-single-header-merv-15-112-660-006-1-filter","title":"24x20x12 Koch Multi-Flo Synthetic Rigid Cartridge MERV 15 Single Header 112-660-006 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 20″ × 12″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-660-006) is a \u003cstrong\u003eMERV 15\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e Single Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 15 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 15 captures\u003c\/h3\u003e\n\u003cp\u003eVery high-efficiency commercial filtration: captures most sub-micron particles including smoke and bacteria. MERV 15 is typically installed in commercial air handlers purpose-built for high-efficiency media, or as a final filter in multi-stage filtration systems. Not appropriate for standard residential HVAC without system modification.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937711915130,"sku":"112-660-006","price":175.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_528ffa93-1fd2-4f9d-afef-7411b23733de.png?v=1742162170"},{"product_id":"24x20x6-multi-flo-synthetic-extended-surface-rigid-cartridge-fm-single-header-merv-15-112-660-007-2-filter","title":"24x20x6 Koch Multi-Flo Synthetic Rigid Cartridge MERV 15 Single Header 112-660-007 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 20″ × 6″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-660-007) is a \u003cstrong\u003eMERV 15\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e Single Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 15 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 15 captures\u003c\/h3\u003e\n\u003cp\u003eVery high-efficiency commercial filtration: captures most sub-micron particles including smoke and bacteria. MERV 15 is typically installed in commercial air handlers purpose-built for high-efficiency media, or as a final filter in multi-stage filtration systems. Not appropriate for standard residential HVAC without system modification.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937711947898,"sku":"112-660-007","price":326.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_b6c6e3b4-701f-45be-9604-c4466d74375f.png?v=1742162178"},{"product_id":"20x20x6-multi-flo-synthetic-extended-surface-rigid-cartridge-fm-single-header-merv-15-112-660-008-2-filter","title":"20x20x6 Koch Multi-Flo Synthetic Rigid Cartridge MERV 15 Single Header 112-660-008 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 20″ × 6″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-660-008) is a \u003cstrong\u003eMERV 15\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e Single Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 15 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 15 captures\u003c\/h3\u003e\n\u003cp\u003eVery high-efficiency commercial filtration: captures most sub-micron particles including smoke and bacteria. MERV 15 is typically installed in commercial air handlers purpose-built for high-efficiency media, or as a final filter in multi-stage filtration systems. Not appropriate for standard residential HVAC without system modification.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937711980666,"sku":"112-660-008","price":320.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_c9527bd3-b12b-474b-8ccf-ec5964cad55f.png?v=1742162185"},{"product_id":"24x24x12-multi-flo-synthetic-extended-surface-rigid-cartridge-nhm-no-header-merv-14-112-651-001-1-filter","title":"24x24x12 Koch Multi-Flo Synthetic Rigid Cartridge MERV 14 No Header 112-651-001 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 24″ × 12″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-651-001) is a \u003cstrong\u003eMERV 14\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e No Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 14 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 14 captures\u003c\/h3\u003e\n\u003cp\u003eSub-micron particles including most smoke and bacteria-sized particles. MERV 14 is a commercial-grade filtration tier, typically used as final filter in commercial air handlers or as a high-efficiency upgrade in facilities with dedicated high-MERV systems. Standard residential HVAC equipment is rarely rated for MERV 14 static pressure.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937712013434,"sku":"112-651-001","price":147.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_2b49f314-4410-4960-a018-2e0bb307ccb9.png?v=1742162193"},{"product_id":"24x12x12-multi-flo-synthetic-extended-surface-rigid-cartridge-nhm-no-header-merv-14-112-651-002-2-filter","title":"24x12x12 Koch Multi-Flo Synthetic Rigid Cartridge MERV 14 No Header 112-651-002 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 12″ × 12″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-651-002) is a \u003cstrong\u003eMERV 14\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e No Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 14 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 14 captures\u003c\/h3\u003e\n\u003cp\u003eSub-micron particles including most smoke and bacteria-sized particles. MERV 14 is a commercial-grade filtration tier, typically used as final filter in commercial air handlers or as a high-efficiency upgrade in facilities with dedicated high-MERV systems. Standard residential HVAC equipment is rarely rated for MERV 14 static pressure.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937712046202,"sku":"112-651-002","price":252.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_72a12b4b-2db4-4422-8ea1-b87998a9a65d.png?v=1742162200"},{"product_id":"24x24x6-multi-flo-synthetic-extended-surface-rigid-cartridge-nhm-no-header-merv-14-112-651-003-2-filter","title":"24x24x6 Koch Multi-Flo Synthetic Rigid Cartridge MERV 14 No Header 112-651-003 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 24″ × 6″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-651-003) is a \u003cstrong\u003eMERV 14\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e No Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 14 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 14 captures\u003c\/h3\u003e\n\u003cp\u003eSub-micron particles including most smoke and bacteria-sized particles. MERV 14 is a commercial-grade filtration tier, typically used as final filter in commercial air handlers or as a high-efficiency upgrade in facilities with dedicated high-MERV systems. Standard residential HVAC equipment is rarely rated for MERV 14 static pressure.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937712078970,"sku":"112-651-003","price":270.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_600d6bd7-caea-4c1f-97f1-84bb814d23b3.png?v=1742162208"},{"product_id":"24x12x6-multi-flo-synthetic-extended-surface-rigid-cartridge-nhm-no-header-merv-14-112-651-004-4-filter","title":"24x12x6 Koch Multi-Flo Synthetic Rigid Cartridge MERV 14 No Header 112-651-004 (4 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 12″ × 6″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-651-004) is a \u003cstrong\u003eMERV 14\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e No Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 14 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 14 captures\u003c\/h3\u003e\n\u003cp\u003eSub-micron particles including most smoke and bacteria-sized particles. MERV 14 is a commercial-grade filtration tier, typically used as final filter in commercial air handlers or as a high-efficiency upgrade in facilities with dedicated high-MERV systems. Standard residential HVAC equipment is rarely rated for MERV 14 static pressure.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937712111738,"sku":"112-651-004","price":465.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_fc5b4b26-4c3c-40cc-971b-c82409efa89d.png?v=1742162216"},{"product_id":"20x20x12-multi-flo-synthetic-extended-surface-rigid-cartridge-nhm-no-header-merv-14-112-651-005-1-filter","title":"20x20x12 Koch Multi-Flo Synthetic Rigid Cartridge MERV 14 No Header 112-651-005 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 20″ × 12″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-651-005) is a \u003cstrong\u003eMERV 14\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e No Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 14 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 14 captures\u003c\/h3\u003e\n\u003cp\u003eSub-micron particles including most smoke and bacteria-sized particles. MERV 14 is a commercial-grade filtration tier, typically used as final filter in commercial air handlers or as a high-efficiency upgrade in facilities with dedicated high-MERV systems. Standard residential HVAC equipment is rarely rated for MERV 14 static pressure.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937712144506,"sku":"112-651-005","price":151.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_90fbb5a6-5722-4a45-8db7-fe7eeb0a868f.png?v=1742162224"},{"product_id":"24x20x12-multi-flo-synthetic-extended-surface-rigid-cartridge-nhm-no-header-merv-14-112-651-006-1-filter","title":"24x20x12 Koch Multi-Flo Synthetic Rigid Cartridge MERV 14 No Header 112-651-006 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 20″ × 12″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-651-006) is a \u003cstrong\u003eMERV 14\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e No Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 14 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 14 captures\u003c\/h3\u003e\n\u003cp\u003eSub-micron particles including most smoke and bacteria-sized particles. MERV 14 is a commercial-grade filtration tier, typically used as final filter in commercial air handlers or as a high-efficiency upgrade in facilities with dedicated high-MERV systems. Standard residential HVAC equipment is rarely rated for MERV 14 static pressure.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937712177274,"sku":"112-651-006","price":158.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_ab34884f-c057-4e24-8e39-b89a4992dcd2.png?v=1742162231"},{"product_id":"24x20x6-multi-flo-synthetic-extended-surface-rigid-cartridge-nhm-no-header-merv-14-112-651-007-2-filter","title":"24x20x6 Koch Multi-Flo Synthetic Rigid Cartridge MERV 14 No Header 112-651-007 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 20″ × 6″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-651-007) is a \u003cstrong\u003eMERV 14\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e No Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 14 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 14 captures\u003c\/h3\u003e\n\u003cp\u003eSub-micron particles including most smoke and bacteria-sized particles. MERV 14 is a commercial-grade filtration tier, typically used as final filter in commercial air handlers or as a high-efficiency upgrade in facilities with dedicated high-MERV systems. Standard residential HVAC equipment is rarely rated for MERV 14 static pressure.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937712210042,"sku":"112-651-007","price":283.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_9e4ef994-676b-47ff-8a6f-97ebe3902a9d.png?v=1742162238"},{"product_id":"20x20x6-multi-flo-synthetic-extended-surface-rigid-cartridge-nhm-no-header-merv-14-112-651-008-2-filter","title":"20x20x6 Koch Multi-Flo Synthetic Rigid Cartridge MERV 14 No Header 112-651-008 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 20″ × 6″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-651-008) is a \u003cstrong\u003eMERV 14\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e No Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 14 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 14 captures\u003c\/h3\u003e\n\u003cp\u003eSub-micron particles including most smoke and bacteria-sized particles. MERV 14 is a commercial-grade filtration tier, typically used as final filter in commercial air handlers or as a high-efficiency upgrade in facilities with dedicated high-MERV systems. Standard residential HVAC equipment is rarely rated for MERV 14 static pressure.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937712242810,"sku":"112-651-008","price":276.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_858e61b7-dc29-4cbd-bd31-5d4a8d25b366.png?v=1742162246"},{"product_id":"24x24x12-multi-flo-synthetic-extended-surface-rigid-cartridge-fm-single-header-merv-14-112-661-001-1-filter","title":"24x24x12 Koch Multi-Flo Synthetic Rigid Cartridge MERV 14 Single Header 112-661-001 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 24″ × 12″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-661-001) is a \u003cstrong\u003eMERV 14\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e Single Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 14 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 14 captures\u003c\/h3\u003e\n\u003cp\u003eSub-micron particles including most smoke and bacteria-sized particles. MERV 14 is a commercial-grade filtration tier, typically used as final filter in commercial air handlers or as a high-efficiency upgrade in facilities with dedicated high-MERV systems. Standard residential HVAC equipment is rarely rated for MERV 14 static pressure.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937712275578,"sku":"112-661-001","price":157.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_856e82ea-b692-4f63-8efd-cc5c965b31c9.png?v=1742162253"},{"product_id":"24x12x12-multi-flo-synthetic-extended-surface-rigid-cartridge-fm-single-header-merv-14-112-661-002-2-filter","title":"24x12x12 Koch Multi-Flo Synthetic Rigid Cartridge MERV 14 Single Header 112-661-002 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 12″ × 12″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-661-002) is a \u003cstrong\u003eMERV 14\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e Single Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 14 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 14 captures\u003c\/h3\u003e\n\u003cp\u003eSub-micron particles including most smoke and bacteria-sized particles. MERV 14 is a commercial-grade filtration tier, typically used as final filter in commercial air handlers or as a high-efficiency upgrade in facilities with dedicated high-MERV systems. Standard residential HVAC equipment is rarely rated for MERV 14 static pressure.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937712308346,"sku":"112-661-002","price":262.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_c1dbfe94-1364-4b1f-b330-743fa22a49c3.png?v=1742162261"},{"product_id":"24x24x6-multi-flo-synthetic-extended-surface-rigid-cartridge-fm-single-header-merv-14-112-661-003-2-filter","title":"24x24x6 Koch Multi-Flo Synthetic Rigid Cartridge MERV 14 Single Header 112-661-003 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 24″ × 6″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-661-003) is a \u003cstrong\u003eMERV 14\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e Single Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 14 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 14 captures\u003c\/h3\u003e\n\u003cp\u003eSub-micron particles including most smoke and bacteria-sized particles. MERV 14 is a commercial-grade filtration tier, typically used as final filter in commercial air handlers or as a high-efficiency upgrade in facilities with dedicated high-MERV systems. Standard residential HVAC equipment is rarely rated for MERV 14 static pressure.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937712341114,"sku":"112-661-003","price":295.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_95311531-2217-4d58-9894-69e31a3bcff0.png?v=1742162268"},{"product_id":"24x12x6-multi-flo-synthetic-extended-surface-rigid-cartridge-fm-single-header-merv-14-112-661-004-4-filter","title":"24x12x6 Koch Multi-Flo Synthetic Rigid Cartridge MERV 14 Single Header 112-661-004 (4 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 12″ × 6″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-661-004) is a \u003cstrong\u003eMERV 14\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e Single Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 14 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 14 captures\u003c\/h3\u003e\n\u003cp\u003eSub-micron particles including most smoke and bacteria-sized particles. MERV 14 is a commercial-grade filtration tier, typically used as final filter in commercial air handlers or as a high-efficiency upgrade in facilities with dedicated high-MERV systems. Standard residential HVAC equipment is rarely rated for MERV 14 static pressure.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937712373882,"sku":"112-661-004","price":507.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_6c5b536b-bba9-4552-95ec-976cb768db99.png?v=1742162274"},{"product_id":"20x20x12-multi-flo-synthetic-extended-surface-rigid-cartridge-fm-single-header-merv-14-112-661-005-1-filter","title":"20x20x12 Koch Multi-Flo Synthetic Rigid Cartridge MERV 14 Single Header 112-661-005 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 20″ × 12″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-661-005) is a \u003cstrong\u003eMERV 14\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e Single Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 14 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 14 captures\u003c\/h3\u003e\n\u003cp\u003eSub-micron particles including most smoke and bacteria-sized particles. MERV 14 is a commercial-grade filtration tier, typically used as final filter in commercial air handlers or as a high-efficiency upgrade in facilities with dedicated high-MERV systems. Standard residential HVAC equipment is rarely rated for MERV 14 static pressure.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937712406650,"sku":"112-661-005","price":159.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_6f1b7d3e-c8a2-4cea-82fb-522f9700c386.png?v=1759429915"},{"product_id":"24x20x12-multi-flo-synthetic-extended-surface-rigid-cartridge-fm-single-header-merv-14-112-661-006-1-filter","title":"24x20x12 Koch Multi-Flo Synthetic Rigid Cartridge MERV 14 Single Header 112-661-006 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 20″ × 12″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-661-006) is a \u003cstrong\u003eMERV 14\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e Single Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 14 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 14 captures\u003c\/h3\u003e\n\u003cp\u003eSub-micron particles including most smoke and bacteria-sized particles. MERV 14 is a commercial-grade filtration tier, typically used as final filter in commercial air handlers or as a high-efficiency upgrade in facilities with dedicated high-MERV systems. Standard residential HVAC equipment is rarely rated for MERV 14 static pressure.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937712439418,"sku":"112-661-006","price":163.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_a118c293-097b-4731-8331-67d24f301f0b.png?v=1742162287"},{"product_id":"24x20x6-multi-flo-synthetic-extended-surface-rigid-cartridge-fm-single-header-merv-14-112-661-007-2-filter","title":"24x20x6 Koch Multi-Flo Synthetic Rigid Cartridge MERV 14 Single Header 112-661-007 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 20″ × 6″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-661-007) is a \u003cstrong\u003eMERV 14\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e Single Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 14 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 14 captures\u003c\/h3\u003e\n\u003cp\u003eSub-micron particles including most smoke and bacteria-sized particles. MERV 14 is a commercial-grade filtration tier, typically used as final filter in commercial air handlers or as a high-efficiency upgrade in facilities with dedicated high-MERV systems. Standard residential HVAC equipment is rarely rated for MERV 14 static pressure.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937712472186,"sku":"112-661-007","price":305.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_a1c88ff5-467c-4de1-ab01-7e0a235725e4.png?v=1742162294"},{"product_id":"20x20x6-multi-flo-synthetic-extended-surface-rigid-cartridge-fm-single-header-merv-14-112-661-008-2-filter","title":"20x20x6 Koch Multi-Flo Synthetic Rigid Cartridge MERV 14 Single Header 112-661-008 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 20″ × 6″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-661-008) is a \u003cstrong\u003eMERV 14\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e Single Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 14 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 14 captures\u003c\/h3\u003e\n\u003cp\u003eSub-micron particles including most smoke and bacteria-sized particles. MERV 14 is a commercial-grade filtration tier, typically used as final filter in commercial air handlers or as a high-efficiency upgrade in facilities with dedicated high-MERV systems. Standard residential HVAC equipment is rarely rated for MERV 14 static pressure.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-13-pleated-air-filters-12-pack\"\u003ePrimeShield Elite (MERV 13)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937712504954,"sku":"112-661-008","price":299.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_2e215f16-53d8-48ac-83a7-f86be6699051.png?v=1742162301"},{"product_id":"24x24x12-multi-flo-synthetic-extended-surface-rigid-cartridge-nhm-no-header-merv-12-112-652-001-1-filter","title":"24x24x12 Koch Multi-Flo Synthetic Rigid Cartridge MERV 12 No Header 112-652-001 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 24″ × 12″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-652-001) is a \u003cstrong\u003eMERV 12\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e No Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 12 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 12 captures\u003c\/h3\u003e\n\u003cp\u003eMost allergens, mold spores, pet dander, smoke and auto-emission particles. MERV 12 sits between standard commercial (MERV 11) and high-efficiency (MERV 13) filtration — a good choice when you want more than MERV 11 but don't need the pressure drop of MERV 13.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937712537722,"sku":"112-652-001","price":138.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_0deabb00-70ff-427d-a04c-e0398630a9a1.png?v=1742162309"},{"product_id":"24x12x12-multi-flo-synthetic-extended-surface-rigid-cartridge-nhm-no-header-merv-12-112-652-002-2-filter","title":"24x12x12 Koch Multi-Flo Synthetic Rigid Cartridge MERV 12 No Header 112-652-002 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 12″ × 12″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-652-002) is a \u003cstrong\u003eMERV 12\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e No Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 12 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 12 captures\u003c\/h3\u003e\n\u003cp\u003eMost allergens, mold spores, pet dander, smoke and auto-emission particles. MERV 12 sits between standard commercial (MERV 11) and high-efficiency (MERV 13) filtration — a good choice when you want more than MERV 11 but don't need the pressure drop of MERV 13.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937712570490,"sku":"112-652-002","price":242.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_2d87e91c-659c-4de4-8051-21150928a51e.png?v=1742162315"},{"product_id":"24x24x6-multi-flo-synthetic-extended-surface-rigid-cartridge-nhm-no-header-merv-12-112-652-003-2-filter","title":"24x24x6 Koch Multi-Flo Synthetic Rigid Cartridge MERV 12 No Header 112-652-003 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 24″ × 6″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-652-003) is a \u003cstrong\u003eMERV 12\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e No Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 12 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 12 captures\u003c\/h3\u003e\n\u003cp\u003eMost allergens, mold spores, pet dander, smoke and auto-emission particles. MERV 12 sits between standard commercial (MERV 11) and high-efficiency (MERV 13) filtration — a good choice when you want more than MERV 11 but don't need the pressure drop of MERV 13.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937712603258,"sku":"112-652-003","price":258.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_1d13f3e3-0e37-40b5-b72e-124ad3b607ba.png?v=1742162322"},{"product_id":"24x12x6-multi-flo-synthetic-extended-surface-rigid-cartridge-nhm-no-header-merv-12-112-652-004-4-filter","title":"24x12x6 Koch Multi-Flo Synthetic Rigid Cartridge MERV 12 No Header 112-652-004 (4 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 12″ × 6″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-652-004) is a \u003cstrong\u003eMERV 12\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e No Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 12 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 12 captures\u003c\/h3\u003e\n\u003cp\u003eMost allergens, mold spores, pet dander, smoke and auto-emission particles. MERV 12 sits between standard commercial (MERV 11) and high-efficiency (MERV 13) filtration — a good choice when you want more than MERV 11 but don't need the pressure drop of MERV 13.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937712636026,"sku":"112-652-004","price":448.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_de8c2c60-b85f-465c-8dc2-10e47fee735d.png?v=1742162329"},{"product_id":"20x20x12-multi-flo-synthetic-extended-surface-rigid-cartridge-nhm-no-header-merv-12-112-652-005-1-filter","title":"20x20x12 Koch Multi-Flo Synthetic Rigid Cartridge MERV 12 No Header 112-652-005 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 20″ × 12″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-652-005) is a \u003cstrong\u003eMERV 12\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e No Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 12 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 12 captures\u003c\/h3\u003e\n\u003cp\u003eMost allergens, mold spores, pet dander, smoke and auto-emission particles. MERV 12 sits between standard commercial (MERV 11) and high-efficiency (MERV 13) filtration — a good choice when you want more than MERV 11 but don't need the pressure drop of MERV 13.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937712668794,"sku":"112-652-005","price":142.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_48544879-5ce3-478a-9057-efa23bc5cf6e.png?v=1742162334"},{"product_id":"24x20x12-multi-flo-synthetic-extended-surface-rigid-cartridge-nhm-no-header-merv-12-112-652-006-1-filter","title":"24x20x12 Koch Multi-Flo Synthetic Rigid Cartridge MERV 12 No Header 112-652-006 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 20″ × 12″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-652-006) is a \u003cstrong\u003eMERV 12\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e No Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 12 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 12 captures\u003c\/h3\u003e\n\u003cp\u003eMost allergens, mold spores, pet dander, smoke and auto-emission particles. MERV 12 sits between standard commercial (MERV 11) and high-efficiency (MERV 13) filtration — a good choice when you want more than MERV 11 but don't need the pressure drop of MERV 13.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937712701562,"sku":"112-652-006","price":151.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_fd927175-2b6c-44ae-8d1a-bdfc9c2c5951.png?v=1742162341"},{"product_id":"24x20x6-multi-flo-synthetic-extended-surface-rigid-cartridge-nhm-no-header-merv-12-112-652-007-2-filter","title":"24x20x6 Koch Multi-Flo Synthetic Rigid Cartridge MERV 12 No Header 112-652-007 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 20″ × 6″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-652-007) is a \u003cstrong\u003eMERV 12\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e No Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 12 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 12 captures\u003c\/h3\u003e\n\u003cp\u003eMost allergens, mold spores, pet dander, smoke and auto-emission particles. MERV 12 sits between standard commercial (MERV 11) and high-efficiency (MERV 13) filtration — a good choice when you want more than MERV 11 but don't need the pressure drop of MERV 13.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937712734330,"sku":"112-652-007","price":272.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_2b7fa7e3-2c38-4e3c-95c5-7b679d64f493.png?v=1742162347"},{"product_id":"20x20x6-multi-flo-synthetic-extended-surface-rigid-cartridge-nhm-no-header-merv-12-112-652-008-2-filter","title":"20x20x6 Koch Multi-Flo Synthetic Rigid Cartridge MERV 12 No Header 112-652-008 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 20″ × 6″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-652-008) is a \u003cstrong\u003eMERV 12\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e No Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 12 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 12 captures\u003c\/h3\u003e\n\u003cp\u003eMost allergens, mold spores, pet dander, smoke and auto-emission particles. MERV 12 sits between standard commercial (MERV 11) and high-efficiency (MERV 13) filtration — a good choice when you want more than MERV 11 but don't need the pressure drop of MERV 13.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937712767098,"sku":"112-652-008","price":265.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_7031ee30-b532-4d18-bb11-549c1a4cce54.png?v=1742162354"},{"product_id":"24x24x12-multi-flo-synthetic-extended-surface-rigid-cartridge-fm-single-header-merv-12-112-662-001-1-filter","title":"24x24x12 Koch Multi-Flo Synthetic Rigid Cartridge MERV 12 Single Header 112-662-001 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 24″ × 12″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-662-001) is a \u003cstrong\u003eMERV 12\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e Single Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 12 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 12 captures\u003c\/h3\u003e\n\u003cp\u003eMost allergens, mold spores, pet dander, smoke and auto-emission particles. MERV 12 sits between standard commercial (MERV 11) and high-efficiency (MERV 13) filtration — a good choice when you want more than MERV 11 but don't need the pressure drop of MERV 13.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. 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The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e Single Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 12 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 12 captures\u003c\/h3\u003e\n\u003cp\u003eMost allergens, mold spores, pet dander, smoke and auto-emission particles. MERV 12 sits between standard commercial (MERV 11) and high-efficiency (MERV 13) filtration — a good choice when you want more than MERV 11 but don't need the pressure drop of MERV 13.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937712832634,"sku":"112-662-002","price":251.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_73989dca-bec8-4d11-8ead-0dee0ec6bfa4.png?v=1742162364"},{"product_id":"24x24x6-multi-flo-synthetic-extended-surface-rigid-cartridge-fm-single-header-merv-12-112-662-003-2-filter","title":"24x24x6 Koch Multi-Flo Synthetic Rigid Cartridge MERV 12 Single Header 112-662-003 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 24″ × 6″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-662-003) is a \u003cstrong\u003eMERV 12\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e Single Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 12 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 12 captures\u003c\/h3\u003e\n\u003cp\u003eMost allergens, mold spores, pet dander, smoke and auto-emission particles. MERV 12 sits between standard commercial (MERV 11) and high-efficiency (MERV 13) filtration — a good choice when you want more than MERV 11 but don't need the pressure drop of MERV 13.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937712865402,"sku":"112-662-003","price":283.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_8fb96510-083d-4959-809b-1f9ca0072c2b.png?v=1742162371"},{"product_id":"24x12x6-multi-flo-synthetic-extended-surface-rigid-cartridge-fm-single-header-merv-12-112-662-004-4-filter","title":"24x12x6 Koch Multi-Flo Synthetic Rigid Cartridge MERV 12 Single Header 112-662-004 (4 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 12″ × 6″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-662-004) is a \u003cstrong\u003eMERV 12\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e Single Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 12 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 12 captures\u003c\/h3\u003e\n\u003cp\u003eMost allergens, mold spores, pet dander, smoke and auto-emission particles. MERV 12 sits between standard commercial (MERV 11) and high-efficiency (MERV 13) filtration — a good choice when you want more than MERV 11 but don't need the pressure drop of MERV 13.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937712898170,"sku":"112-662-004","price":489.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_260093f9-07f3-41a3-bdfc-b3c402791571.png?v=1742162374"},{"product_id":"20x20x12-multi-flo-synthetic-extended-surface-rigid-cartridge-fm-single-header-merv-12-112-662-005-1-filter","title":"20x20x12 Koch Multi-Flo Synthetic Rigid Cartridge MERV 12 Single Header 112-662-005 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 20″ × 12″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-662-005) is a \u003cstrong\u003eMERV 12\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e Single Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 12 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 12 captures\u003c\/h3\u003e\n\u003cp\u003eMost allergens, mold spores, pet dander, smoke and auto-emission particles. MERV 12 sits between standard commercial (MERV 11) and high-efficiency (MERV 13) filtration — a good choice when you want more than MERV 11 but don't need the pressure drop of MERV 13.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937712930938,"sku":"112-662-005","price":154.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_c509ac98-039e-49d7-8a53-269982e17adb.png?v=1742162379"},{"product_id":"24x20x12-multi-flo-synthetic-extended-surface-rigid-cartridge-fm-single-header-merv-12-112-662-006-1-filter","title":"24x20x12 Koch Multi-Flo Synthetic Rigid Cartridge MERV 12 Single Header 112-662-006 (1 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 20″ × 12″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-662-006) is a \u003cstrong\u003eMERV 12\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e Single Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 12 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 12 captures\u003c\/h3\u003e\n\u003cp\u003eMost allergens, mold spores, pet dander, smoke and auto-emission particles. MERV 12 sits between standard commercial (MERV 11) and high-efficiency (MERV 13) filtration — a good choice when you want more than MERV 11 but don't need the pressure drop of MERV 13.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937712963706,"sku":"112-662-006","price":158.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_ce7577c6-e6ae-463c-a7a2-3a8232b3ebc9.png?v=1742162385"},{"product_id":"24x20x6-multi-flo-synthetic-extended-surface-rigid-cartridge-fm-single-header-merv-12-112-662-007-2-filter","title":"24x20x6 Koch Multi-Flo Synthetic Rigid Cartridge MERV 12 Single Header 112-662-007 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 20″ × 6″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-662-007) is a \u003cstrong\u003eMERV 12\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e Single Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 12 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 12 captures\u003c\/h3\u003e\n\u003cp\u003eMost allergens, mold spores, pet dander, smoke and auto-emission particles. MERV 12 sits between standard commercial (MERV 11) and high-efficiency (MERV 13) filtration — a good choice when you want more than MERV 11 but don't need the pressure drop of MERV 13.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937712996474,"sku":"112-662-007","price":293.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_e0d051d3-6b25-45ae-bc57-80e7a9ef6810.png?v=1742162391"},{"product_id":"20x20x6-multi-flo-synthetic-extended-surface-rigid-cartridge-fm-single-header-merv-12-112-662-008-2-filter","title":"20x20x6 Koch Multi-Flo Synthetic Rigid Cartridge MERV 12 Single Header 112-662-008 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e20″ × 20″ × 6″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-662-008) is a \u003cstrong\u003eMERV 12\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e Single Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 12 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 12 captures\u003c\/h3\u003e\n\u003cp\u003eMost allergens, mold spores, pet dander, smoke and auto-emission particles. MERV 12 sits between standard commercial (MERV 11) and high-efficiency (MERV 13) filtration — a good choice when you want more than MERV 11 but don't need the pressure drop of MERV 13.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. 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The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e No Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 11 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 11 captures\u003c\/h3\u003e\n\u003cp\u003eFine dust, pollen, pet dander, mold spores, smoke particles, and smaller allergens. MERV 11 is the standard recommendation for households with allergies, asthma, or pets, and is commonly specified for commercial office spaces where indoor air quality is a priority. Confirm your system can handle the slight increase in static pressure compared to MERV 8.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937713062010,"sku":"112-653-001","price":137.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_7eb71a4c-5b3d-428d-b50d-1b076606c142.png?v=1742162403"},{"product_id":"24x12x12-multi-flo-synthetic-extended-surface-rigid-cartridge-nhm-no-header-merv-11-112-653-002-2-filter","title":"24x12x12 Koch Multi-Flo Synthetic Rigid Cartridge MERV 11 No Header 112-653-002 (2 Filters)","description":"\u003cp\u003eThis \u003cstrong\u003e24″ × 12″ × 12″\u003c\/strong\u003e \u003cstrong\u003eKoch Multi-Flo Synthetic Rigid Cartridge\u003c\/strong\u003e filter (part number 112-653-002) is a \u003cstrong\u003eMERV 11\u003c\/strong\u003e rigid extended-surface cartridge engineered for commercial VAV air handlers and high-airflow industrial systems.\u003c\/p\u003e\n\u003ch3\u003eWhy a rigid cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe Multi-Flo is purpose-built for \u003cstrong\u003evariable air volume\u003c\/strong\u003e applications where airflow changes throughout the day. The metal-and-plastic frame construction holds pleat geometry regardless of whether the system is running at 50% or 100% airflow. Non-rigid filters balloon or collapse under changing airflow, creating bypass paths.\u003c\/p\u003e\n\u003ch3\u003eDesign and construction\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Extended-surface synthetic pleated media, supported by rigid internal separators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Rugged metal and plastic composite — stands up to vibration and variable airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e No Header.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e MERV 11 per ASHRAE 52.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat MERV 11 captures\u003c\/h3\u003e\n\u003cp\u003eFine dust, pollen, pet dander, mold spores, smoke particles, and smaller allergens. MERV 11 is the standard recommendation for households with allergies, asthma, or pets, and is commonly specified for commercial office spaces where indoor air quality is a priority. Confirm your system can handle the slight increase in static pressure compared to MERV 8.\u003c\/p\u003e\n\u003ch3\u003eAlso worth considering\u003c\/h3\u003e\n\u003cp\u003eShopping on price? Our house brand \u003ca href=\"\/products\/merv-11-pleated-air-filters-12-pack\"\u003ePrimeShield Advanced (MERV 11)\u003c\/a\u003e covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically.\u003c\/p\u003e\n\u003ch3\u003eQuestions on fit, quantity, or a commercial quote?\u003c\/h3\u003e\n\u003cp\u003eNeed a size that isn't listed, a different pack count, or a quote for a commercial order? \u003ca href=\"\/pages\/contact-us\"\u003eGet in touch\u003c\/a\u003e — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"Default Title","offer_id":43937713094778,"sku":"112-653-002","price":237.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_fcf33551-4129-41cf-bd76-21b00ae93537.png?v=1742162410"}],"url":"https:\/\/www.rememberthefilter.com\/collections\/koch-multi-flo-multi-sak-bag.oembed?page=8","provider":"RememberTheFilter.com","version":"1.0","type":"link"}