A+2000 Washable Electrostatic Permanent Custom Air Filter - 17" x 21" x 1" Quantity:Default and long service life which

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

degrade and restrict air flow

You may know them as washable air or even permanent air filters

the A+2000 uses stage loading

and the greater the pressure drop it creates

A+2000 Washable Electrostatic Permanent Custom Air Filter - 17" x 21" x 1" Quantity:Default and long service life whichYou 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