20x20x5 (20.25x20.75x5.25) MERV 8 Aftermarket Amana Replacement Filter (2 Pack) Nominal size 20 x 20 x 5. Actual size (H) 20 1/4 x (W) 20 3/4 x (D) 5 1/4. Package contains 2 filters. Original box type design. This is an aftermarket filter.