This Filter Hut Accumulair brand 21x22x1 air filter is solely constructed to be a replacement for same sized 21x22x1 air filter specs. Pleated electrostatically charged filter media traps airborne substances according to the MERV specification. Free of chemicals. Note: The example filter picture displayed is not to scale and is shown for construction only. Current stock and 21x22x1 air filter variations last verified on 03/24/2020.
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