20" x 24" x 2" MERV 4 - Residential Washable Air Filter 19-875l 18" x 22" x 1"

18" x 22" x 1" MERV 6 - Fiberglass Air Filter - 6 Pack

22" x 22" x 1" MERV 4 - Residential Washable Air Filter - 1 Pack

Actual Dimensions: 17 1/2" x 21 1/2" x 3/4"

An aluminum frame Filtration Group filter is the lightest weight filter in the industrial grade class

Actual Dimensions: 19 7/8" x 22 7/8" x 3/4"

20" x 24" x 2" MERV 4 - Residential Washable Air Filter 19-875l 18" x 22" x 1"20" x 24" x 2" MERV 4 Residential Washable Air Filter 1 Pack Actual Dimensions: 20" x 24" x 1 3 4 These quality filters are built to last a lifetime. They are interchangeable with 1" disposable filters and can be used again and again. The secret behind the filter's performance is its patented stage loading peak and valley design. Instead of face loading (particles captured on the outer surface of the filter) the filter uses stage loading, with each