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
- Our current lead times are 4-6 business days for stocked filters (standard 1"-5" thick sizes), and up to 8-12 business days for made-to-order filters (non-standard and 0.5" sizes). Delivery normally takes another 1-3 days depending on location.
- Shipping is FREE to the contiguous United States.
- 30-day 100% return policy.
Payment & Security
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