Actual size is 19.75 x 24.25 x 4.75. Brand: Accumulair. 20x25x5 Armstrong ABS20A-1 style whole house air filters, specifically engineered to be an alternative to the OEM Armstrong ABS20A-1 air filters. Fully constructed so no assembly or combs needed. MERV classified to ASHRAE grades ensuring particle capture equal to the original manufacturer Armstrong ABS20A-1 filters. Photo: The sample air filter pic displayed is not to scale and is included to show style only. OEM names and Armstrong ABS20A-1 P/N are used for air filter replacement identification purposes only.
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