Our Accumulair 12x24x4 air filter is solely designed to replace same sized 12x24x4 air filter specs. Pleated electrostatic charged media traps airborne particles according to the ASHRAE MERV rating. Free of chemicals. Note: The sample filter picture displayed is not the actual dimensions and is shown for construction only. Current stock and 12x24x4 air filter variations current as of 03/24/2020.
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