A+2000 Washable Electrostatic Permanent Custom Air Filter - 29 1/2" x 31 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

built to last a lifetime

with each stage capturing progressively smaller particles inside the filter

28X Increased Efficiency

This design enables A+2000 custom air filters to maintain performance over the years

yet powerful solution for air stream disinfection or coil irradiation

allowing the grease to drain into through below

Produces no ozone or aldehydes

Simply cut a hole

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

and the greater the pressure drop it creates

some just refer to them as electrostatic filters

Filtering inserts are shipped in an easily stored packet