This Filter Hut Accumulair brand 15x20x4 air filter is exactly designed to be a replacement for same sized 15x20x4 air filter specification. Pleated electrostatically charged media traps contaminants in the air according to the ASHRAE MERV rating. Chemical free. Note: Sample filter picture shown is not to scale and is included to show style only. Database and 15x20x4 air filter variations are up to date as of 03/24/2020.
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