Actual dimensions are 20.25 x 25.38 x 5.25. Accumulair brand, 20x25x5 Nordyne N-BB2025 replacement whole house air filters, exactly designed to substitute for the original brand Nordyne N-BB2025 filters. Completely assembled so no assembly or combs needed. MERV classified to ASHRAE 52.2 test ratings assuring filtration to the level of the original brand Nordyne N-BB2025 air filters. Note: Sample air filter picture as displayed is not the actual dimensions and is included to show construction purposes only. Company names and Nordyne N-BB2025 part numbers used for filter replacement identification purposes.
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