A+2000 Washable Electrostatic Permanent Custom Air Filter - 10" x 11" 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

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

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In general

from the air stream

the A+2000 uses stage loading

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

One way to overcome this problem is to increase the surface area of the filter media

Instead of face loading (particles captured on the outer surface of the filter)

high quality Air Filters to you

Available in packs of 4