A+2000 Washable Electrostatic Permanent Custom Air Filter - 6 1/2" x 21 1/2" x 1" Quantity:Default and long service life which

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

UL/ULC listed

such as dust

The permanent frame is constructed of space-age plastics that are resistant to corrosion

A+2000 Washable Electrostatic Permanent Custom Air Filter - 6 1/2" x 21 1/2" 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