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They are interchangeable with 1" disposable filters and can be used again and again
7 3/4" x 7 3/4" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack
22" x 36" x 1" MERV 4 - Residential Washable Air Filter - 1 Pack
12" x 12" x 4" MERV 11 - Pleated Air Filter - 6 Pack
21 1/2" x 23 1/2" x 1" MERV 4 - Residential Washable Air Filter - 1 Pack
16 1/4" x 21 1/2" x 1" MERV 4 - Residential Washable Air Filter merv-8 They are interchangeable with 1"16 1 4" x 21 1 2" x 1" MERV 4 Residential Washable Air Filter 1 Pack Actual Dimensions: 16. 25" x 21. 5" x 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,
