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Ships within 48 hours · Estimated delivery Aug 22 - Aug 27
Valuable tool in achieving LEED certification points
Actual Dimensions: 18" x 18" x 1 3/4
24" x 25" x 1" MERV 4 - Residential Washable Air Filter - 1 Pack
12" x 36" x 1" Permanent Washable Air Filter - 1 Pack
24" x 36" x 1" Permanent Washable Air Filter - 1 Pack
21 1/2" x 21 1/2" x 1" MERV 4 - Residential Washable Air Filter Residential Washable Air Filter:21 1/2" x 21 1/2" x 1" MERV 4 - Residential Washable Air Filter Valuable tool in achieving LEED21 1 2" x 21 1 2" x 1" MERV 4 Residential Washable Air Filter 1 Pack Actual Dimensions: 21. 5" 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,
