A+2000 Washable Electrostatic Permanent Custom Air Filter - 19 1/2" x 33" x 1" Quantity:Default than standard fiberglass filters purchased

than standard fiberglass filters purchased at retail outlets

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

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

They are easy to install with custom air filters made to the sizes that you specify

A+2000 Washable Electrostatic Permanent Custom Air Filter - 19 1/2" x 33" x 1" Quantity:Default than standard fiberglass filters purchasedYou 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