Pad Refills (Pack of 6 Pads) - 12" x 21" x 3/4" Quantity:Default They are easy to clean

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

28X Increased Efficiency

This is designed to fit into 1" Return Air Grilles

For use in grease hoods and fryers

Produces no ozone or aldehydes

Pad Refills (Pack of 6 Pads) - 12" x 21" x 3/4" Quantity:Default They are easy to cleanPACK 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.