Pad Refills (Pack of 6 Pads) - 9 1/2" x 9 1/2" x 1" Quantity:Default with each stage capturing progressively

with each stage capturing progressively smaller particles inside the filter

To order washable electrostatic custom air filters you just need to know the size of the current air filter

offers the quickest installation on the Planet

Unlike some permanent custom air filters

Available in packs of 4

Pad Refills (Pack of 6 Pads) - 9 1/2" x 9 1/2" x 1" Quantity:Default with each stage capturing progressivelyPACK 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.