Pad Refills (Pack of 6 Pads) - 16 5/8" x 21 1/4" x 3/4" Quantity:Default than standard fiberglass filters purchased

than standard fiberglass filters purchased at retail outlets

such as dust

Because we specialize in custom air filters

The Pad and Frame Air Filter involves a permanent frame and replaceable filtration pad inserts

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

Pad Refills (Pack of 6 Pads) - 16 5/8" x 21 1/4" x 3/4" Quantity:Default than standard fiberglass filters purchasedPACK 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.