21x22x1 Electrostatic Washable Permanent A/C Furnace Air Filter – Reusable – Silver Frame – Lifetime Warranty Description
This filter comes in 2 size variations: 21 x 22 x 7/8 inches -or- 20-1/2 x 21-1/2 x 7/8 inches. Please contact us through Amazon messages after purchase to let us know which size you need. Tired of having to remember to buy that furnace filter every 3 months? Tired of your house being dusty? Replace your disposable air filter with a washable electrostatic filter. It traps 10X more dust and allergens than cheap disposables, has a durable metal frame and comes with a lifetime warranty. Just hose off, allow to dry for 15 minutes and reinstall.