Description
Actual size is 20.75 x 24.25 x 4.38. Brand: Accumulair. 21x24x4.5 Rheem PD540020 style whole house filters, specifically constructed to be an alternative to the original manufacturer Rheem PD540020 filters. Completely assembled with no forming or combs needed. MERV rated to ASHRAE standards assuring particulate filtration as good or better than the name brand Rheem PD540020 air filters. Photo: Example air filter picture as shown is not to scale and is there to show style purposes. OEM names and Rheem PD540020 P/N are used for air filter substitution purposes only.