Pad and Frame Air Filter (1 Frame and 6 Pads) - 21 1/2" x 21 3/4" x 3/4" Quantity:Default Includes one Frame and PACK

Includes one Frame and PACK of 6 pads

Instead of face loading (particles captured on the outer surface of the filter)

The permanent frame is constructed of space-age plastics that are resistant to corrosion

Can be ordered in packages of 2 each only

Pad and Frame Air Filter (1 Frame and 6 Pads) - 21 1/2" x 21 3/4" x 3/4" Quantity:Default Includes one Frame and PACKIncludes one Frame and PACK of 6 pads The Pad and Frame Air Filter involves a permanent frame and replaceable filtration pad inserts. The permanent frame is constructed of space age plastics that are resistant to corrosion, oxidation and deterioration. 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