Pad Refills (Pack of 6 Pads) - 23 1/4" x 23 1/4" x 1" Quantity:Default with each stage capturing progressively

with each stage capturing progressively smaller particles inside the filter

Either way

Because we specialize in custom air filters

We look forward to delivering our American-made

if not you can measure it or check the HVAC unit and the owner‰۪s manual

Pad Refills (Pack of 6 Pads) - 23 1/4" x 23 1/4" 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.