Filter Hut's Accumulair brand 21.5x23x4 air filter is solely built to be compatible with same sized 21.5x23x4 air filter specification. Pleated electrostatically charged filter media traps airborne particles relative to its MERV rating. Chemical free material. Notice: The sample filter image shown is not to scale and is included to show design purposes only. Database and 21.5x23x4 air filter statements last updated on 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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