Description
Actual dimensions are 20.75 x 24.25 x 4.38. Accumulair brand, 21x24x4.5 Ruud PD540014 replacement whole house air filters, specifically constructed to substitute for the name brand Ruud PD540014 filters. Completely assembled - no assembly or combs needed. MERV classified to ASHRAE ratings assuring filtration to the level of the name brand Ruud PD540014 filters. Note: The sample air filter pic as displayed is not true to size and is displayed for style only. OEM names and Ruud PD540014 part numbers are included for air filter substitution identification.