A+2000 Washable Electrostatic Permanent Custom Air Filter - 22" x 25" x 1" Quantity:Default the greater it's resistance to

the greater it's resistance to airflow

Available in packs of 4

and the greater the pressure drop it creates

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A+2000 Washable Electrostatic Permanent Custom Air Filter - 22" x 25" x 1" Quantity:Default the greater it's resistance toYou 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