Our Accumulair 18x22x4 air filter is exactly engineered to be a replacement for similarly sized 18x22x4 air filter specification. Pleated static charged filter material traps contaminants in the air according to the MERV specification. Free of chemicals. Notice: Example filter image displayed is not to scale and is shown for style purposes. Database and 18x22x4 air filter specs last verified on 03/24/2020.
Shipping and Returns
- Shipping is FREE to the contiguous United States.
- Our current lead times are 3-5 business days for stocked filters (standard 1"-5" thick sizes), up to 3 weeks for made-to-order filters (non-standard and 0.5" sizes), and up to 8 weeks for bag filters.
Delivery normally takes another few days depending on location.
- 30-day 100% return policy.
Payment & Security
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