This Filter Hut Accumulair 21x21x0.5 air filter is exactly made to replace similarly sized 21x21x0.5 air filter specification. Pleated electrostatically charged filter media captures airborne particles relative to its ASHRAE MERV rating. Material is free of chemicals. Note: The sample filter image as shown is not the actual dimensions and is displayed for design purposes only. Catalog and 21x21x0.5 air filter statements are up to date as of 03/24/2020.
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