Pad Refills (Pack of 6 Pads) - 17 1/2" x 17 1/2" x 1" Quantity:Default so it can provide a

so it can provide a lifetime of dependable service

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

Eliminates Filter Bypass

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

some just refer to them as electrostatic filters

Pad Refills (Pack of 6 Pads) - 17 1/2" x 17 1/2" x 1" Quantity:Default so it can provide aPACK of 6 pads for Pad and Frame Air Filters Filtering inserts are anti microbial and are more efficient in capturing particles, such as dust, ragweed, pollen, etc., from the air stream, than standard fiberglass filters purchased at retail outlets. Filtering inserts are shipped in an easily stored packet.