A+2000 Washable Electrostatic Permanent Custom Air Filter - 17" x 23" x 1" Quantity:Default The "Practical Pleat" media is

The "Practical Pleat" media is up to 28 times more effective at capturing particles than standard fiberglass panel filters

In general

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

Available in packs of 4

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

A+2000 Washable Electrostatic Permanent Custom Air Filter - 17" x 23" x 1" Quantity:Default The "Practical Pleat" media isYou 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