A+2000 Washable Electrostatic Permanent Custom Air Filter - 21 1/4" x 23" 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

PACK of 6 pads for Pad and Frame Air Filters

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Some of the other benefits of A+2000 custom air filters include the following

Any Kind of Filter's Extended Surface Pleated Filters outperform ordinary furnace filters with medium efficiency and are designed for lower pressure drop

You never have to hassle with disposable filters that will end up in a landfill again

We can make custom air filters in heights and widths ranking from 6 inches to 36 7/8 inches with increments in 8ths of an inch

oxidation and deterioration

And there are no metal parts that could lead to corrosion or oxidation within the filter

Includes one Frame and PACK of 6 pads

the A+2000 uses stage loading

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