Pad Refills (Pack of 6 Pads) - 23" x 24" x 1" Quantity:Default with each stage capturing progressively

with each stage capturing progressively smaller particles inside the filter

we even have the odd sizes

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

This is designed to fit into 1" Return Air Grilles

It is designed to inhibit growth of bacteria

Pad Refills (Pack of 6 Pads) - 23" x 24" x 1" Quantity:Default with each stage capturing progressivelyPACK 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.