A+2000 Washable Electrostatic Permanent Custom Air Filter - 17 1/2" x 17 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

the "A+2000" brand Permanent Washable Electrostatic custom air filters are truly quality products

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

than standard fiberglass filters purchased at retail outlets

The A+2000 line is easy to maintain with no need to buy oils or adhesives to enhance effectiveness

we even have the odd sizes

Either way

degrade and restrict air flow

if not you can measure it or check the HVAC unit and the owner‰۪s manual

We look forward to delivering our American-made

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

and the greater the pressure drop it creates

Available in packs of 4