Actual Size: 20.75 x 20.25 x 5.25. Accumulair brand 20x20x5 Westinghouse BB2020 style whole house filters, specifically engineered to substitute for the original manufacturer Westinghouse BB2020 air filters. Fully constructed so no forming or combs needed. MERV classified to ASHRAE 52.2 test specs ensuring particle capture equal to the name brand Westinghouse BB2020 filters. Notice: The sample filter image displayed is not true to size and is there to show construction only. OEM names and Westinghouse BB2020 identifier used for air filter replacement identification use.
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