Filter Hut's Accumulair brand 17x21x0.5 air filter is specifically constructed to replace similarly sized 17x21x0.5 air filter specs. Pleated static charged filter material captures contaminants in the air according to the ASHRAE MERV specification. Free of chemicals. Notice: Sample filter picture as shown is not the actual dimensions and is shown for construction only. Database and 17x21x0.5 air filter specs are up to date as of 03/24/2020.
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