Filter Hut's Accumulair brand 20x30x4 air filter is exactly engineered to substitute for similarly sized 20x30x4 air filter specs. Pleated electrostatically charged filter media captures airborne particles according to the MERV standard rating. Chemical free. Notice: The example filter picture as shown is not to scale and is shown for style only. Catalog and 20x30x4 air filter specs last updated on 03/24/2020.
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