Description
Actual dimensions are 20.75 x 20.75 x 4.38. Accumulair brand: 21x21x4.5 Rheem RXHF-E21AM13 replacement whole house filters, specifically constructed to substitute for the OEM Rheem RXHF-E21AM13 air filters. Completely constructed with no assembly or combs required. MERV rated to ASHRAE standards ensuring operation equal to the name brand Rheem RXHF-E21AM13 filters. Note: The example air filter image as displayed is not the actual dimensions and is displayed for design only. OEM names and Rheem RXHF-E21AM13 identifier displayed for filter style identification only.