Pad Refills (Pack of 6 Pads) - 17 1/4" x 26 1/8" x 1" Quantity:Default with each stage capturing progressively

with each stage capturing progressively smaller particles inside the filter

They are easy to clean by simply backwashing every month with cold water so you don‰۪t need expensive cleaners

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

Includes one Frame and PACK of 6 pads

Because we specialize in custom air filters

Pad Refills (Pack of 6 Pads) - 17 1/4" x 26 1/8" x 1" Quantity:Default with each stage capturing progressivelyPACK 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.