Photo 1 of AprilAire 113 Replacement Filter for AprilAire Whole House Air Purifiers - MERV 13, Healthy Home Allergy, 16x20x4 Air Filter (Pack of 1)

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Photo 1 of AprilAire 113 Replacement Filter for AprilAire Whole House Air Purifiers - MERV 13, Healthy Home Allergy, 16x20x4 Air Filter (Pack of 1)Photo 2 of AprilAire 113 Replacement Filter for AprilAire Whole House Air Purifiers - MERV 13, Healthy Home Allergy, 16x20x4 Air Filter (Pack of 1)Photo 3 of AprilAire 113 Replacement Filter for AprilAire Whole House Air Purifiers - MERV 13, Healthy Home Allergy, 16x20x4 Air Filter (Pack of 1)Photo 4 of AprilAire 113 Replacement Filter for AprilAire Whole House Air Purifiers - MERV 13, Healthy Home Allergy, 16x20x4 Air Filter (Pack of 1)