This Accumulair brand 20x40x4 air filter is exactly designed to be a replacement for same sized 20x40x4 air filter specification. Pleated electrostatic charged media captures airborne particles relative to its ASHRAE MERV specification. Chemical free. Note: Sample filter picture shown is not to scale and is displayed for construction only. Catalog and 20x40x4 air filter statements 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.
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