Pad and Frame Air Filter (1 Frame and 6 Pads) - 20" x 25" x 1" Quantity:Default such as dust

such as dust

and the greater the pressure drop it creates

the A+2000 uses no foam that may clog

PACK of 6 pads for Pad and Frame Air Filters

Pad and Frame Air Filter (1 Frame and 6 Pads) - 20" x 25" x 1" Quantity:Default such as dustIncludes 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