Pad and Frame Air Filter (1 Frame and 6 Pads) - 21 1/4" x 23 1/4" x 1" Quantity:Default The unit also includes a

The unit also includes a magnetic mounting bracket for optional installation inside air handlers

No holes needed for installation in coil area

we even have the odd sizes

This is a 5" MERV 10 HIGH PERFORMANCE AIR FILTER

Magnetic mount holds lamp in place

Pad and Frame Air Filter (1 Frame and 6 Pads) - 21 1/4" x 23 1/4" x 1" Quantity:Default The unit also includes aIncludes 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