Actual size is 16.25 x 21 x 5. Accumulair brand, 16x21x5 Electro-Air F825-0431 compatible whole house filters, exactly designed to replace the original manufacturer Electro-Air F825-0431 filters. Completely constructed so no assembly or combs needed. MERV graded to ASHRAE 52.2 test standards establishing particulate filtration to the level of the original brand Electro-Air F825-0431 air filter. Notice: Example filter picture displayed is not true to size and is displayed for design only. OEM names and Electro-Air F825-0431 identifier used for filter replacement purposes only.
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