A+2000 Washable Electrostatic Permanent Custom Air Filter - 17" x 21" x 1" Quantity:Default The "Practical Pleat" contains over

The "Practical Pleat" contains over 500% greater surface area than a MERV 10 one-inch pleat

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

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

the A+2000 uses stage loading

degrade and restrict air flow

A+2000 Washable Electrostatic Permanent Custom Air Filter - 17" x 21" x 1" Quantity:Default The "Practical Pleat" contains overYou 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