Pad and Frame Air Filter (1 Frame and 6 Pads) - 21 1/2" x 23 1/2" x 1" Quantity:Default such as dust

such as dust

And there are no metal parts that could lead to corrosion or oxidation within the filter

Available in packs of 4

You never have to hassle with disposable filters that will end up in a landfill again

Pad and Frame Air Filter (1 Frame and 6 Pads) - 21 1/2" x 23 1/2" x 1" Quantity:Default such as dustIncludes one Frame and PACK of 6 pads The Pad and Frame Air Filter involves a permanent frame and replaceable filtration pad inserts. The permanent frame is constructed of space age plastics that are resistant to corrosion, oxidation and deterioration. 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