Actual Size: 20.75 x 24.25 x 4.38. Accumulair brand, 21x24x4.5 Ruud RXHF-E24AM10 substitute whole house filters, exactly engineered to be an alternative to the OEM Ruud RXHF-E24AM10 air filters. Completely assembled with no forming or combs required. MERV graded to ASHRAE 52.2 test standards ensuring operation equal to the original brand Ruud RXHF-E24AM10 filters. Note: Example filter picture displayed is not true to size and is there to show construction only. Name brands and Ruud RXHF-E24AM10 part numbers are used for air filter style identification only.
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