A+2000 Washable Electrostatic Permanent Custom Air Filter - 19 3/4" x 19 3/4" x 1" Quantity:Default To find the size the

To find the size the old unit should have sizing information printed on it

In general

the greater it's resistance to airflow

built to last a lifetime

28X Increased Efficiency

A+2000 Washable Electrostatic Permanent Custom Air Filter - 19 3/4" x 19 3/4" x 1" Quantity:Default To find the size theYou 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