Description
Actual Dimensions: 20.75 x 24.25 x 4.38. Accumulair brand 21x24x4.5 Ruud Protech 540014 substitute whole house air filters, exactly designed to replace name brand Ruud Protech 540014 air filters. Completely assembled - no forming or combs required. MERV rated to ASHRAE 52.2 test specifications ensuring particulate capture as good or better than the OEM Ruud Protech 540014 air filter. Notice: Sample air filter pic as displayed is not to scale and is there to show configuration purposes. Trade names and Ruud Protech 540014 identifier are listed for filter substitution identification purposes.