A+2000 Washable Electrostatic Permanent Custom Air Filter - 21 7/8" x 23 3/4" x 1" Quantity:Default You may know them as

You may know them as washable air or even permanent air filters

The "Practical Pleat" contains over 500% greater surface area than a MERV 10 one-inch pleat

PACK of 6 pads for Pad and Frame Air Filters

You never have to hassle with disposable filters that will end up in a landfill again

Any Kind of Filter's Extended Surface Pleated Filters outperform ordinary furnace filters with medium efficiency and are designed for lower pressure drop

A+2000 Washable Electrostatic Permanent Custom Air Filter - 21 7/8" x 23 3/4" x 1" Quantity:Default You may know them asYou may know them as washable air or even permanent air filters; some just refer to them as electrostatic filters. Either way, the "A+2000" brand Permanent Washable Electrostatic custom air filters are truly quality products, built to last a lifetime. Unlike some permanent custom air filters, the A+2000 uses no foam that may clog, degrade and restrict air flow, so it can provide a lifetime of dependable service. And there are no metal parts that could