A+2000 Washable Electrostatic Permanent Custom Air Filter - 9" x 31 3/4" x 1"You 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

built to last a lifetime

with each stage capturing progressively smaller particles inside the filter

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

such as dust

oxidation and deterioration

This is designed to fit into 1" Return Air Grilles

No holes needed for installation in coil area

is an easy

we even have the odd sizes

from the air stream

Unlike some permanent custom air filters

the A+2000 uses no foam that may clog