Actual Dimensions: 16.25 x 21 x 5. Accumulair brand: 16x21x5 Electro-Air F811-0398 replacement whole house filters, exactly engineered to be an alternative to the OEM Electro-Air F811-0398 filters. Completely assembled with no forming or combs required. MERV graded to ASHRAE specifications assuring particle filtration as good or better than the original manufacturer Electro-Air F811-0398 air filters. Photo: Example air filter pic as displayed is not to scale and is there to show configuration purposes. OEM names and Electro-Air F811-0398 P/N included for air filter substitution identification purposes only.
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