Our Accumulair brand 20x21.5x1 air filter is exactly designed to substitute for similarly sized 20x21.5x1 air filter specs. Pleated electrostatic charged media traps contaminants relative to its MERV standard rating. Chemical free material. Notice: Example filter image shown is not to scale and is shown for style purposes only. Current stock and 20x21.5x1 air filter statements current as of 03/24/2020.
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