20x20x5 (20.75x20.25x5.25) MERV 13 Aftermarket Carrier Replacement Filter (2 Pack) Carrier P102-2020, P102-2020BB, B2-1056, M2-1056. Fits Carrier air cleaner models CMF2020 and P102-MF14B. 20 x 20 x 5 (nominal size) Carrier whole house media filter. Actual size (H)20 3/4 x (W)20 1/4 x (D)5 1/4. This is an aftermarket filter.