19 x 21-1/2 x 1 Lifetime Air Filter - Electrostatic Washable Permanent A/C Furnace Air Filter Replaces standard 19 x 21-1/2 x 1 sized disposable filters. This filter measures EXACTLY 18-7/8 x 21-3/8 x 7/8. Just hose off and water, allow to dry for 15 minutes and reinstall. Our Electrostatic Filters are Manufactured with a products MERV 12. Replace your disposable air filter with a washable electrostatic filter. It traps more dust and allergens, has a durable metal frame and comes with a warranty or your money back. Easy to install, easy to maintain, easy to clean with the only cleaner product recommended to maintaining youre A/C Filters lifetime warranty ASIN: - BO74S4GFTY The filter is resistant to mold and mildew. Built to last a lifetime. Easy to install, easy to maintain, because of its LOW AIR RESISTANCE dont make your Central Air Unit work harder. Reduce the number of particles such as pollen, dust, bacteria, mold, Spores and smoke. Friendly to environment. Made in USA and Imported. With a warranty satisfaction and 100% money back guarantee. These filters retail elsewhere for $ 99.99 our products manufacturing Electrostatic Filters has a rating of Merv 11.