Pad Refills (Pack of 6 Pads) - 20 1/4" x 21 3/4" x 1" Quantity:Default some just refer to them

some just refer to them as electrostatic filters

This design enables A+2000 custom air filters to maintain performance over the years

Our 304 Stainless Steel Grease Baffle filters are designed to hold up through the toughest conditions

It is designed to inhibit growth of bacteria

This is designed to fit into 1" Return Air Grilles

Pad Refills (Pack of 6 Pads) - 20 1/4" x 21 3/4" x 1" Quantity:Default some just refer to themPACK 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.