Pad Refills (Pack of 6 Pads) - 12" x 27 3/8" x 3/4" Quantity:Default One way to overcome this

One way to overcome this problem is to increase the surface area of the filter media

the A+2000 uses no foam that may clog

Available in packs of 4

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

Pad Refills (Pack of 6 Pads) - 12" x 27 3/8" x 3/4" Quantity:Default One way to overcome thisPACK 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.