A+2000 Washable Electrostatic Permanent Custom Air Filter - 13" x 21 1/4" 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

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so it can provide a lifetime of dependable service

In general

with each stage capturing progressively smaller particles inside the filter

oxidation and deterioration

We can make custom air filters in heights and widths ranking from 6 inches to 36 7/8 inches with increments in 8ths of an inch

Because we specialize in custom air filters

the A+2000 uses stage loading

some just refer to them as electrostatic filters

One way to overcome this problem is to increase the surface area of the filter media