Pad Refills (Pack of 6 Pads) - 19 1/4" x 19 1/4" x 1" Quantity:Default and the greater the pressure

and the greater the pressure drop it creates

The secret behind the A+2000‰۪s custom air filters performance is the patented stage loading/peak and valley design

these can be purchased in any conceivable size

This is a 5" MERV 10 HIGH PERFORMANCE AIR FILTER

so it can provide a lifetime of dependable service

Pad Refills (Pack of 6 Pads) - 19 1/4" x 19 1/4" x 1" Quantity:Default and the greater the pressurePACK 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.