Pad Refills (Pack of 6 Pads) - 23" x 24" x 1" Quantity:Default They are constructed from 304

They are constructed from 304 Stainless Steel material formed to exact specifications

It is designed to inhibit growth of bacteria

PLEASE NOTE: Dimensions listed are HxWxD

The permanent frame is constructed of space-age plastics that are resistant to corrosion

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

Pad Refills (Pack of 6 Pads) - 23" x 24" x 1" Quantity:Default They are constructed from 304PACK 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.