Description
Actual dimensions are 19.13 x 19.88 x 4.25. Accumulair brand 19x20x4.5 Carrier FILXXFNC0121 substitute whole house air filters, exactly constructed to substitute for the original brand Carrier FILXXFNC0121 filters. Completely box-formed - no assembly or combs required. MERV graded to ASHRAE 52.2 test specs establishing operation as good or better than the OEM Carrier FILXXFNC0121 air filters. Photo: The example air filter image shown is not true to size and is there to show configuration purposes. OEM names and Carrier FILXXFNC0121 P/N are included for filter replacement identification.