This Filter Hut Accumulair brand 28x30x4 air filter is solely constructed to substitute for same sized 28x30x4 air filter type. Pleated electrostatically charged filter media traps airborne substances according to the MERV standard rating. Free of chemicals. Notice: Example filter picture shown is not the actual dimensions and is included to show style purposes only. Database and 28x30x4 air filter statements current as of 03/24/2020.
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