A+2000 Washable Electrostatic Permanent Custom Air Filter - 18" x 20" x 1" Quantity:Default these can be purchased in

these can be purchased in any conceivable size

In general

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

and the greater the pressure drop it creates

than standard fiberglass filters purchased at retail outlets

A+2000 Washable Electrostatic Permanent Custom Air Filter - 18" x 20" x 1" Quantity:Default these can be purchased inYou 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