Filter Hut's Accumulair brand 13x21x1 air filter is solely constructed to substitute for similarly sized 13x21x1 air filter specs. Pleated static charged filter material captures airborne substances according to the ASHRAE MERV rating. Chemical free material. Notice: The sample filter picture shown is not to scale and is included to show design purposes only. Current stock and 13x21x1 air filter statements last verified on 03/24/2020.
Shipping and Returns
- Lead times vary and are listed at the top of the website. Non-standard sizes (custom, 0.5" thick, etc) take 3-4 weeks for delivery.
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- 30-day 100% return policy.
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