Pad Refills (Pack of 6 Pads) - 18 1/2" x 20 3/4" x 3/4" Quantity:Default degrade and restrict air flow

degrade and restrict air flow

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Any Kind of Filter's Extended Surface Pleated Filters outperform ordinary furnace filters with medium efficiency and are designed for lower pressure drop

You may know them as washable air or even permanent air filters

Pad Refills (Pack of 6 Pads) - 18 1/2" x 20 3/4" x 3/4" Quantity:Default degrade and restrict air flowPACK 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.