A+2000 Washable Electrostatic Permanent Custom Air Filter - 17 1/4" x 19 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

The secret behind the A+2000‰۪s custom air filters performance is the patented stage loading/peak and valley design

Can be ordered in packages of 2 each only

so it can provide a lifetime of dependable service

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the greater it's resistance to airflow

And there are no metal parts that could lead to corrosion or oxidation within the filter

the A+2000 uses stage loading

from the air stream

They are easy to install with custom air filters made to the sizes that you specify

Filtering inserts are shipped in an easily stored packet

and the greater the pressure drop it creates

Instead of face loading (particles captured on the outer surface of the filter)