Photo 1 of AprilAire 501 Replacement Filter for AprilAire 5000 Whole-House Air Purifier - MERV 15 Equivalent, 16x25x6 Air Filter

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Photo 1 of AprilAire 501 Replacement Filter for AprilAire 5000 Whole-House Air Purifier - MERV 15 Equivalent, 16x25x6 Air Filter Photo 2 of AprilAire 501 Replacement Filter for AprilAire 5000 Whole-House Air Purifier - MERV 15 Equivalent, 16x25x6 Air Filter Photo 3 of AprilAire 501 Replacement Filter for AprilAire 5000 Whole-House Air Purifier - MERV 15 Equivalent, 16x25x6 Air Filter