16x20x4.25 (15.5x19.88x4.25) MERV 8 Aftermarket Carrier Replacement Filter (2 Pack) Carrier FILCCFNC0017 and FILBBFNC0017. 16" x 20" x 4 1/4" (nominal size) Carrier whole house media filter. Actual size (H) 15 1/2" x (W) 19 7/8" x (D) 4 1/4". Package contains 2 filters. This is an aftermarket filter.