Actual dimensions are 20.75 x 20.25 x 5.25. Accumulair brand: 20x20x5 Tappan NC2020 style whole house filters, specifically engineered to replace OEM Tappan NC2020 filters. Fully constructed so no assembly or combs needed. MERV classified to ASHRAE standards establishing operation equal to the name brand Tappan NC2020 filters. Note: Sample filter pic shown is not to scale and is displayed for style only. Brand names and Tappan NC2020 P/N are included for air filter replacement identification use.
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