Filter Hut's Accumulair brand 20x20x4 air filter is specifically built to be compatible with similarly sized 20x20x4 air filter style. Pleated static charged media captures airborne contaminants relative to its ASHRAE MERV rating. Free of chemicals. Notice: Sample filter picture as shown is not to scale and is included to show style only. Current stock and 20x20x4 air filter variations are up to date as of 03/24/2020.
Shipping and Returns
- Our current lead times are 10-14 business days for standard filters (1"-6" thick sizes), and up to 14-21 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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