Filter Hut's Accumulair brand 11.5x21x1 air filter is exactly designed to substitute for same sized 11.5x21x1 air filter specification. Pleated electrostatically charged media traps airborne particles relative to its MERV rating. Chemical free. Note: Example filter image shown is not the actual dimensions and is included to show construction purposes. Current stock and 11.5x21x1 air filter specs current as of 03/24/2020.
Shipping and Returns
- Shipping is FREE to the contiguous United States.
Due to shortages and demand the current lead time is up to 10 business days to process.
Orders take 1-3 business days to process.
(Custom & bag filters take 5-7 business days.)
Delivery normally takes another 1-3 days depending on location.
- 30-day 100% return policy.
Payment & Security
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