Pad Refills (Pack of 6 Pads) - 18" x 18" x 2" Quantity:Default the A+2000 uses stage loading

the A+2000 uses stage loading

Filtering inserts are anti-microbial and are more efficient in capturing particles

28X Increased Efficiency

The A+2000 line is easy to maintain with no need to buy oils or adhesives to enhance effectiveness

oxidation and deterioration

Pad Refills (Pack of 6 Pads) - 18" x 18" x 2" Quantity:Default the A+2000 uses stage loadingPACK 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.