Filter Hut's Accumulair 18x36x4 air filter is solely made to substitute for same sized 18x36x4 air filter style. Pleated static charged filter material traps contaminants in the air according to the MERV standard specification. Chemical free. Notice: The example filter image as shown is not the actual dimensions and is included to show style purposes. Catalog and 18x36x4 air filter statements last updated on 03/24/2020.
Shipping and Returns
- Our current lead times are 6-8 business days for standard filters (1"-6" thick sizes), and up to 10-14 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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