Pad Refills (Pack of 6 Pads) - 20 1/8" x 23 1/8" x 3/4" Quantity:Default with each stage capturing progressively

with each stage capturing progressively smaller particles inside the filter

They are easy to install with custom air filters made to the sizes that you specify

yet powerful solution for air stream disinfection or coil irradiation

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

Pad Refills (Pack of 6 Pads) - 20 1/8" x 23 1/8" x 3/4" 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.