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
- Shipping is FREE to the contiguous United States.
- Our current lead times are 3-5 days for stocked standard filters, up to 3 weeks for non-standard and 0.5" filters, and up to 8 weeks for bag filters.
Delivery normally takes another 1-3 days depending on location.
- 30-day 100% return policy.
Payment & Security
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