{"product_id":"filter-king-af17x21x1a-m11-merv-11-air-filter-17x21x1","title":"AF17x21x1A-M11 Merv 11 Air Filter 17x21x1","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe AF17x21x1A-M11 is a MERV 11 pleated HVAC air filter designed for residential and light commercial forced-air systems. With a nominal size of 17x21x1 inches and an actual size of 17 x 21 x 0.75 inches, this filter fits a wide range of standard filter slots in air handlers and furnaces. At MERV 11, it captures fine particulates including dust, pollen, mold spores, and pet dander, making it a solid choice for systems where air quality and equipment protection are both priorities. This listing includes a quantity of 10 filters. HVAC technicians and facility maintenance crews use this filter in routine preventive maintenance programs.\u003c\/p\u003e\u003cp\u003eThis filter is suited for residential and light commercial forced-air HVAC applications where a nominal 1-inch filter slot is specified. It works in gas furnaces, heat pumps, and air handler units that accept filters in the 17x21x1 nominal size. The MERV 11 efficiency rating positions it above standard fiberglass and MERV 8 filters, capturing smaller airborne particles without the static pressure restriction associated with higher MERV ratings. It is a practical choice for clients with mild allergy concerns or homes with pets.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMERV 11 filtration captures fine dust, pollen, mold spores, and pet dander\u003c\/li\u003e\n\u003cli\u003eNominal size 17x21x1 inches fits standard residential and light commercial filter tracks\u003c\/li\u003e\n\u003cli\u003eActual size 17 x 21 x 0.75 inches for precise fit verification before installation\u003c\/li\u003e\n\u003cli\u003ePleated media design increases surface area for longer service intervals\u003c\/li\u003e\n\u003cli\u003eSold in a 10-pack for bulk stocking and scheduled maintenance programs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement for residential and light commercial forced-air systems requiring a nominal 17x21x1 inch pleated air filter with MERV 11 efficiency.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eFilter installation should be performed by a qualified HVAC technician or knowledgeable facilities maintenance professional. Always shut down the air handler or furnace at the disconnect or thermostat before changing the filter. Confirm airflow direction arrows on the filter frame align with the system airflow direction before securing the filter door. Replace filters on a regular schedule based on system runtime and site conditions, typically every 60 to 90 days in moderate-use residential applications.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal Size\u003c\/strong\u003e: 17 x 21 x 1 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eActual Size\u003c\/strong\u003e: 17 x 21 x 0.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMERV Rating\u003c\/strong\u003e: MERV 11\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter Thickness\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity per Order\u003c\/strong\u003e: 10 filters\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: FILTER\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: AF17x21x1A-M11\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FILTER","offers":[{"title":"Default Title","offer_id":51716759716146,"sku":"AF17x21x1A-M11","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/4f5cc2bafe34b96d3e2d0571e1a0e978_61ab3765-f6a2-4f64-b963-5105ab317d70.jpg?v=1790917291","url":"https:\/\/voomisupply.com\/products\/filter-king-af17x21x1a-m11-merv-11-air-filter-17x21x1","provider":"Voomi Supply","version":"1.0","type":"link"}