Description
Actual dimensions are 20.75 x 24.25 x 4.38. Accumulair brand, 21x24x4.5 Ruud Protech 540014 compatible whole house air filters, exactly constructed to replace OEM Ruud Protech 540014 filters. Completely assembled with no assembly or combs needed. MERV rated to ASHRAE 52.2 test specifications assuring performance as good or better than the original brand Ruud Protech 540014 filters. Notice: The example air filter picture as displayed is not the actual dimensions and is shown for style purposes. OEM names and Ruud Protech 540014 identifier displayed for air filter style identification only.