Our Accumulair 21.5x26x4 air filter is solely designed to be a replacement for same sized 21.5x26x4 air filter specs. Pleated static charged filter media traps contaminants according to the MERV specification. Free of chemicals. Notice: The example filter picture displayed is not to scale and is displayed for design purposes only. Catalog and 21.5x26x4 air filter statements are up to date 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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