Filter Hut's Accumulair brand 18.25x22x4 air filter is specifically made to substitute for similarly sized 18.25x22x4 air filter style. Pleated static charged filter media traps airborne particles relative to its MERV rating. Material is free of chemicals. Note: Sample filter picture displayed is not to scale and is displayed for style purposes. Database and 18.25x22x4 air filter statements current 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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