A+2000 Washable Electrostatic Permanent Custom Air Filter - 19 5/8" x 35 5/8" x 1" Quantity:Default the more efficient a filter

the more efficient a filter is at removing particles

with each stage capturing progressively smaller particles inside the filter

The Pad and Frame Air Filter involves a permanent frame and replaceable filtration pad inserts

oxidation and deterioration

A+2000 Washable Electrostatic Permanent Custom Air Filter - 19 5/8" x 35 5/8" x 1" Quantity:Default the more efficient a filterYou 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