Our Accumulair 18x22x4 air filter is exactly engineered to be a replacement for similarly sized 18x22x4 air filter specification. Pleated static charged filter material traps contaminants in the air according to the MERV specification. Free of chemicals. Notice: Example filter image displayed is not to scale and is shown for style purposes. Database and 18x22x4 air filter specs last verified on 03/24/2020.
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