A+2000 Washable Electrostatic Permanent Custom Air Filter - 21 1/4" x 22 1/2" 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

To find the size the old unit should have sizing information printed on it

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

please click HERE to read detailed brochure (Adobe Reader PDF file)

Some of the other benefits of A+2000 custom air filters include the following

In general

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

such as dust

Either way

and long service life which reduces HVAC equipment maintenance and energy costs

the A+2000 uses stage loading

Eliminates Filter Bypass

Filtering inserts are shipped in an easily stored packet