Filter Hut's Accumulair brand 29x29x4 air filter is solely engineered to replace similarly sized 29x29x4 air filter specs. Pleated electrostatic charged filter material traps airborne substances according to the ASHRAE MERV rating. Chemical free material. Notice: The example filter picture shown is not to scale and is included to show design purposes only. Database and 29x29x4 air filter specs are up to date as of 03/24/2020.
Shipping and Returns
- Lead times vary and are listed at the top of the website. Non-standard sizes (custom, 0.5" thick, etc) take 3-4 weeks for delivery.
- Shipping is FREE to the contiguous United States.
- 30-day 100% return policy.
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