Description
Actual Dimensions: 20.75 x 20.75 x 4.38. Accumulair brand: 21x21x4.5 Rheem RXHF-E21AM10 substitute whole house filters, specifically designed to replace the name brand Rheem RXHF-E21AM10 air filters. Fully box-formed with no assembly or combs required. MERV classified to ASHRAE 52.2 test classifications assuring operation equal to the OEM Rheem RXHF-E21AM10 filter. Photo: The example filter picture shown is not true to size and is there to show design only. Trade names and Rheem RXHF-E21AM10 part numbers shown for filter replacement identification.