{"product_id":"koch-multi-test-mt-50-60-merv-11-cartridge-filter","title":"Koch Multi-Test MT 50\/60 (~MERV 11) Cartridge Filter for Farr HP Basket Frames - Sold by the Case","description":"\u003cp\u003eThe Koch \u003cstrong\u003eMulti-Test MT 50\/60 Cartridge Filter\u003c\/strong\u003e is an extended-surface synthetic cartridge engineered as a \u003cstrong\u003edrop-in replacement for Farr HP basket framework\u003c\/strong\u003e without housing modification. The MT 50\/60 tier delivers \u003cstrong\u003e45-55% dust spot \/ 60% arrestance\u003c\/strong\u003e per ASHRAE 52.1, which corresponds to approximately \u003cstrong\u003eMERV 11\u003c\/strong\u003e per the modern ASHRAE 52.2 test standard. Specified for mid-efficiency final filtration in commercial HVAC with Farr HP basket frames.\u003c\/p\u003e\u003ch3\u003eWhat you get: sold by the case\u003c\/h3\u003e\u003cp\u003eMulti-Test cartridges are \u003cstrong\u003esold by the case\u003c\/strong\u003e, not individually. The price you see for each variant is the \u003cstrong\u003efull case price\u003c\/strong\u003e, and each variant label tells you exactly how many filters are in that case. Case counts vary by size:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e12x24x8\u003c\/strong\u003e — available by quote (typical case quantity: 12 per case). \u003ca href=\"\/pages\/quote\"\u003eRequest a quote\u003c\/a\u003e for current pricing and availability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e16x20x8\u003c\/strong\u003e — \u003cstrong\u003e12 filters per case\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20x20x8\u003c\/strong\u003e — \u003cstrong\u003e10 filters per case\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20x25x8\u003c\/strong\u003e — \u003cstrong\u003e10 filters per case\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24x24x8\u003c\/strong\u003e — \u003cstrong\u003e10 filters per case\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12x24x12\u003c\/strong\u003e — \u003cstrong\u003e10 filters per case\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24x24x12\u003c\/strong\u003e — \u003cstrong\u003e10 filters per case\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12x24x24\u003c\/strong\u003e — available by quote (typical case quantity: 5 per case). \u003ca href=\"\/pages\/quote\"\u003eRequest a quote\u003c\/a\u003e for current pricing and availability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24x24x24\u003c\/strong\u003e — available by quote (typical case quantity: 5 per case). \u003ca href=\"\/pages\/quote\"\u003eRequest a quote\u003c\/a\u003e for current pricing and availability.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eNeed a partial case, individual filter pricing, or a different quantity than the standard case? Per Koch policy, carton quantities are approximations and we can adjust on quoted orders — \u003ca href=\"\/pages\/quote\"\u003erequest a quote\u003c\/a\u003e with your exact count and we’ll work out the pricing.\u003c\/p\u003e\u003ch3\u003eFarr HP basket replacement\u003c\/h3\u003e\u003cp\u003eIf your facility uses \u003cstrong\u003eFarr HP basket framework\u003c\/strong\u003e, the Multi-Test cartridge is a direct sourcing option. Koch engineered Multi-Test cartridges to drop into existing Farr HP baskets without any housing modification — same dimensions, same collapsible cartridge geometry. Multi-Test cartridges are \u003cstrong\u003ecollapsible replacement cartridges\u003c\/strong\u003e, which lets the cartridge fold compactly for transport and storage and then expand to fill the Farr HP basket on installation.\u003c\/p\u003e\u003cp\u003eThis product line gives facilities running Farr HP equipment an alternative supplier for ongoing changeouts, particularly important when OEM Farr HP cartridges become difficult to source or quote.\u003c\/p\u003e\u003ch3\u003eWhy \"MT MT 50\/60\" naming — ASHRAE 52.1 vs 52.2\u003c\/h3\u003e\u003cp\u003eThe Multi-Test product line predates the modern \u003cstrong\u003eASHRAE 52.2 (MERV)\u003c\/strong\u003e rating system — the four MT tiers (20\/50, 50\/60, 80\/90, 90\/95) are named with the older \u003cstrong\u003eASHRAE 52.1 dual-metric efficiency designations\u003c\/strong\u003e. The first number is approximate dust spot efficiency; the second is approximate arrestance.\u003c\/p\u003e\u003cp\u003eFor specifying engineers and modern HVAC documentation, here’s the approximate MERV correspondence used in industry:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMT 20\/50\u003c\/strong\u003e → approximately MERV 8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMT 50\/60\u003c\/strong\u003e → approximately MERV 11\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMT 80\/90\u003c\/strong\u003e → approximately MERV 13\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMT 90\/95\u003c\/strong\u003e → approximately MERV 14\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor applications requiring formal MERV documentation against the 52.2 standard, reference Koch bulletin K 1187 or contact us for the latest spec sheet.\u003c\/p\u003e\u003ch3\u003eDesign and construction\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Extended-surface collapsible cartridge filter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Synthetic high-efficiency media (collapsible construction)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame compatibility:\u003c\/strong\u003e Farr HP basket framework (drop-in, no modification required). Baskets sold separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEfficiency rating:\u003c\/strong\u003e 45-55% dust spot \/ 60% arrestance per ASHRAE 52.1; approximately MERV 11 per ASHRAE 52.2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReference bulletin:\u003c\/strong\u003e Koch K 1187\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold by the case.\u003c\/strong\u003e Each variant label shows the exact number of filters in that case (see \"What you get\" above). Variant price is the case price.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhen the Multi-Test MT 50\/60 is specified\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMid-efficiency commercial HVAC\u003c\/strong\u003e — office buildings, schools, hotels, retail with Farr HP basket frames where ~MERV 11 capture is the design target\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLight-industrial systems\u003c\/strong\u003e with Farr HP equipment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHealthcare and laboratory pre-filtration\u003c\/strong\u003e — ahead of MERV 13+ final stages in Farr HP basket frames\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable-air-volume systems\u003c\/strong\u003e where the cartridge form factor handles airflow swings well\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat ~MERV 11 captures\u003c\/h3\u003e\u003cp\u003eCaptures fine dust, smoke, auto fumes, and most airborne particles down to 1 micron. Strong general-purpose efficiency for offices, schools, hotels, and light industrial.\u003c\/p\u003e\u003ch3\u003eChoosing across the Multi-Test line\u003c\/h3\u003e\u003cp\u003eKoch offers four efficiency tiers in the Multi-Test cartridge line, all designed to fit Farr HP basket framework:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMT 20\/50 (~MERV 8):\u003c\/strong\u003e 20-30% dust spot efficiency. For prefilter and equipment protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMT 50\/60 (this product) (~MERV 11):\u003c\/strong\u003e 45-55% dust spot efficiency. For mid-efficiency commercial HVAC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMT 80\/90 (~MERV 13):\u003c\/strong\u003e 80-90% dust spot efficiency. For high-IAQ commercial and healthcare.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMT 90\/95 (~MERV 14):\u003c\/strong\u003e 90-95% dust spot efficiency. For near-HEPA secondary, pharma, labs, HEPA pre-stage.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf your application calls for a different efficiency, see the matching sister product. All four tiers share the same collapsible cartridge geometry and Farr HP-compatible fitment — the difference is just which efficiency tier matches your design spec.\u003c\/p\u003e\u003ch3\u003eSizing and ordering notes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecify both face dimensions and depth.\u003c\/strong\u003e Cartridges are sized as Width x Height x Depth (e.g., 24x24x12). Match all three dimensions to your Farr HP basket — cartridges cannot be cut or trimmed in the field.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEach variant shows its case quantity in the dropdown label.\u003c\/strong\u003e Look for \"(Case of N)\" next to each size — that’s how many filters are in the case at that price.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBaskets sold separately.\u003c\/strong\u003e The Multi-Test is a replacement cartridge for existing Farr HP framework. If you need new baskets or supporting hardware, contact us for compatible options.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarton quantities are approximations.\u003c\/strong\u003e Per Koch policy, please state the exact number of filters required when ordering — we can adjust for partial cases on quoted orders.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\"Call for Quote\" sizes:\u003c\/strong\u003e Some sizes are catalog items but require direct quoting due to lower order volume or build-to-order production. These show \"(Call for Quote)\" in the variant dropdown — \u003ca href=\"\/pages\/quote\"\u003erequest a quote\u003c\/a\u003e for these sizes or for facility-scale orders.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeed a Cambridge Hi-Cap or Side-Cap replacement instead?\u003c\/strong\u003e See the Koch Duo-Cap line for the Cambridge equivalent. Different basket framework, same drop-in replacement strategy.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Koch","offers":[{"title":"12x24x8 (Call for Quote)","offer_id":44118932324474,"sku":"107-702-001","price":0.0,"currency_code":"USD","in_stock":false},{"title":"16x20x8 (Case of 12)","offer_id":44118932357242,"sku":"107-702-002","price":687.0,"currency_code":"USD","in_stock":true},{"title":"20x20x8 (Case of 10)","offer_id":44118932390010,"sku":"107-702-003","price":695.2,"currency_code":"USD","in_stock":true},{"title":"20x25x8 (Case of 10)","offer_id":44118932422778,"sku":"107-702-004","price":698.7,"currency_code":"USD","in_stock":true},{"title":"24x24x8 (Case of 10)","offer_id":44118932455546,"sku":"107-702-005","price":709.0,"currency_code":"USD","in_stock":true},{"title":"12x24x12 (Case of 10)","offer_id":44118932488314,"sku":"107-702-006","price":595.0,"currency_code":"USD","in_stock":true},{"title":"24x24x12 (Case of 10)","offer_id":44118932521082,"sku":"107-702-007","price":884.9,"currency_code":"USD","in_stock":true},{"title":"12x24x24 (Call for Quote)","offer_id":44118932553850,"sku":"107-702-008","price":0.0,"currency_code":"USD","in_stock":false},{"title":"24x24x24 (Call for Quote)","offer_id":44118932586618,"sku":"107-702-009","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/Multi-Test-Cartridge_getimage2_1-213.jpg?v=1777741284","url":"https:\/\/www.rememberthefilter.com\/products\/koch-multi-test-mt-50-60-merv-11-cartridge-filter","provider":"RememberTheFilter.com","version":"1.0","type":"link"}