Description
Actual Size: 19.13 x 19.88 x 4.25. Accumulair brand 19x20x4.5 Carrier FILBBFNC0021 substitute whole house air filters, specifically built to replace original brand Carrier FILBBFNC0021 air filters. Fully constructed with no assembly or combs needed. MERV classified to ASHRAE 52.2 test specifications assuring performance equal to the OEM Carrier FILBBFNC0021 filters. Notice: The example filter image as shown is not true to size and is shown for construction purposes only. Company names and Carrier FILBBFNC0021 identifier included for air filter substitution identification only.