Actual Size: 20 x 25.25 x 3.75. Brand: Accumulair. 20x25.25x3.5 Aprilaire 2120 compatible whole house air filters, exactly designed to replace the original brand Aprilaire 2120 filters. Completely built - no assembly or combs needed. MERV rated to ASHRAE 52.2 test ratings ensuring operation to the level of the original brand Aprilaire 2120 filter. Photo: Example air filter image displayed is not to scale and is shown for configuration purposes. Brand names and Aprilaire 2120 part numbers are included for air filter substitution purposes.
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