{"product_id":"filter-king-af18x20x1-m13-merv-13-air-filter-18x20x1","title":"Filter King AF18x20x1-M13 Merv 13 Air Filter 18x20x1","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe FILTER KING AF18x20x1-M13 is a MERV 13 rated pleated air filter designed for residential and light commercial HVAC systems. Rated at MERV 13, it captures fine particulates including dust, pollen, mold spores, bacteria, and fine smoke particles that lower-rated filters pass through. The nominal size is 18x20x1 inches with an actual size of 17.5 x 19.5 x 0.75 inches. This filter is a standard 1-inch thick unit sold in a quantity of 10 per pack. HVAC technicians and service pros will recognize this as a drop-in replacement for any 18x20x1 filter slot requiring MERV 13 filtration performance.\u003c\/p\u003e\u003cp\u003eThis filter is suited for forced-air residential furnaces, central air conditioning systems, and air handlers that use a standard 1-inch filter rack or return-air grille. MERV 13 filtration is commonly specified in residential applications where improved indoor air quality is a priority, or in light commercial environments where occupant health and equipment protection are both concerns. The pleated media design increases surface area compared to flat-panel filters, supporting airflow efficiency while maintaining high filtration efficiency. Each pack contains 10 filters.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMERV 13 rating captures particles down to 0.3 to 1.0 microns including fine dust, smoke, and biological contaminants\u003c\/li\u003e\n\u003cli\u003ePleated media design maximizes filter surface area and extends service life compared to fiberglass flat-panel filters\u003c\/li\u003e\n\u003cli\u003eNominal size 18x20x1 inches fits standard filter slots labeled for that size\u003c\/li\u003e\n\u003cli\u003eActual dimensions of 17.5 x 19.5 x 0.75 inches ensure proper fit without binding in the filter rack\u003c\/li\u003e\n\u003cli\u003eSold in a 10-pack for job stocking or multi-unit service routes\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a drop-in replacement for any residential or light commercial forced-air system using a standard 1-inch filter slot with a nominal opening of 18x20x1 inches and requiring MERV 13 filtration.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified HVAC technician or trained service professional. Always shut down the air handler or furnace at the system disconnect before removing or installing the filter. Confirm airflow direction arrow on the filter frame aligns with system airflow direction before seating the filter. Inspect the filter rack gasket or frame seal and replace if damaged to prevent air bypass around the filter media.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMERV Rating\u003c\/strong\u003e: MERV 13\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal Size\u003c\/strong\u003e: 18 x 20 x 1 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eActual Size\u003c\/strong\u003e: 17.5 x 19.5 x 0.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity per Pack\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 KING\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: AF18x20x1-M13\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Filter King","offers":[{"title":"Default Title","offer_id":51716789600562,"sku":"AF18x20x1-M13","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ded7b7b395536dd1b22964e7663d2b19_64ad7528-88ea-4ce8-83be-687998fbc739.jpg?v=1788531804","url":"https:\/\/voomisupply.com\/products\/filter-king-af18x20x1-m13-merv-13-air-filter-18x20x1","provider":"Voomi Supply","version":"1.0","type":"link"}