20x20x1 Electrostatic Washable Permanent Air Furnace Filter
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 more dust and allergens, has a durable metal frame and comes with a lifetime warranty. Just hose off, allow to dry for 15 minutes and reinstall. As per industry standards, this 20x20x1 filter measures EXACTLY 19-5/8 X 19-5/8 X 7/8.