Filter Hut's Accumulair brand 16.25x21x4 air filter is exactly built to substitute for same sized 16.25x21x4 air filter specs. Pleated electrostatic charged media traps contaminants according to the MERV standard rating. Chemical free. Notice: The sample filter picture displayed is not to scale and is displayed for design purposes only. Current stock and 16.25x21x4 air filter specs 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.
Payment & Security
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