This Accumulair brand 21.5x23.25x4 air filter is specifically built to substitute for similarly sized 21.5x23.25x4 air filter specification. Pleated electrostatically charged media captures airborne particles according to the ASHRAE MERV specification. Chemical free. Notice: Sample filter image displayed is not to scale and is displayed for design purposes only. Current stock and 21.5x23.25x4 air filter variations last verified 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.
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