Actual Size: 19.56 x 22 x 5.25. Accumulair brand 20x22x5 Nordyne N-MFAH-B substitute whole house air filters, exactly constructed to be an alternative to the name brand Nordyne N-MFAH-B filters. Completely box-formed with no forming or combs required. MERV classified to ASHRAE 52.2 test grades establishing performance equal to the name brand Nordyne N-MFAH-B filters. Notice: Sample filter picture shown is not to scale and is displayed for design purposes. Name brands and Nordyne N-MFAH-B P/N displayed for air filter style identification purposes only.
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