This Accumulair brand 20x36x4 air filter is specifically engineered to replace same sized 20x36x4 air filter style. Pleated electrostatically charged media captures airborne particles according to the MERV rating. Material is free of chemicals. Note: Sample filter picture as shown is not to scale and is shown for construction purposes only. Catalog and 20x36x4 air filter specs are up to date as of 03/24/2020.
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