Our Accumulair 16.38x21.5x4 air filter is exactly constructed to replace similarly sized 16.38x21.5x4 air filter style. Pleated electrostatic charged filter media captures airborne contaminants relative to its MERV rating. Chemical free material. Notice: Sample filter image as shown is not the actual dimensions and is displayed for construction purposes. Current stock and 16.38x21.5x4 air filter variations are up to date as of 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
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.