Pad Refills (Pack of 6 Pads) - 11 7/8" x 11 7/8" x 1" Quantity:Default This is a 5" MERV

This is a 5" MERV 10 HIGH PERFORMANCE AIR FILTER

To find the size the old unit should have sizing information printed on it

They are easy to clean by simply backwashing every month with cold water so you don‰۪t need expensive cleaners

from the air stream

Pad Refills (Pack of 6 Pads) - 11 7/8" x 11 7/8" x 1" Quantity:Default This is a 5" MERVPACK 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.