Photo 1 of 3Pack 213 Replacement Filter Compatible with AprilAire Whole House Air Purifiers Model 1210, 1620, 2210, 2216, 3210, MERV 13 Furnace Filter Replacement, Size 20x25x4 (Actual size: 21.1x24.8x4in)

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Photo 1 of 3Pack 213 Replacement Filter Compatible with AprilAire Whole House Air Purifiers Model 1210, 1620, 2210, 2216, 3210, MERV 13 Furnace Filter Replacement, Size 20x25x4 (Actual size: 21.1x24.8x4in)Photo 2 of 3Pack 213 Replacement Filter Compatible with AprilAire Whole House Air Purifiers Model 1210, 1620, 2210, 2216, 3210, MERV 13 Furnace Filter Replacement, Size 20x25x4 (Actual size: 21.1x24.8x4in)Photo 3 of 3Pack 213 Replacement Filter Compatible with AprilAire Whole House Air Purifiers Model 1210, 1620, 2210, 2216, 3210, MERV 13 Furnace Filter Replacement, Size 20x25x4 (Actual size: 21.1x24.8x4in)