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030" thick 3003 H-14 aluminum frame to enclose the filter media pack
20" x 34" x 1" MERV 4 - Residential Washable Air Filter - 1 Pack
18" x 22" x 1" MERV 6 - Fiberglass Air Filter - 6 Pack
Actual Dimensions: 16 1/4" x 21 1/2" x 3/4"
18" x 18" x 2" MERV 4 - Residential Washable Air Filter 4d 030" thick 3003 H-14 aluminum18" x 18" x 2" MERV 4 Residential Washable Air Filter 1 Pack Actual Dimensions: 18" x 18" 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
