Photo 1 of 2-Pack 413 Replacement Filter Compatible with Aprilaire Whole House Air Purifiers, Models 1410, 1610, 2410, 2416, 3410, 4400, MERV 13 Air Purifiers, Size: 16x25x4(Actual Size 16.1''x27.8"x4)

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Photo 1 of 2-Pack 413 Replacement Filter Compatible with Aprilaire Whole House Air Purifiers, Models 1410, 1610, 2410, 2416, 3410, 4400, MERV 13 Air Purifiers, Size: 16x25x4(Actual Size 16.1''x27.8"x4)Photo 2 of 2-Pack 413 Replacement Filter Compatible with Aprilaire Whole House Air Purifiers, Models 1410, 1610, 2410, 2416, 3410, 4400, MERV 13 Air Purifiers, Size: 16x25x4(Actual Size 16.1''x27.8"x4)Photo 3 of 2-Pack 413 Replacement Filter Compatible with Aprilaire Whole House Air Purifiers, Models 1410, 1610, 2410, 2416, 3410, 4400, MERV 13 Air Purifiers, Size: 16x25x4(Actual Size 16.1''x27.8"x4)