This Accumulair 12.75x21x4 air filter is solely made to replace similarly sized 12.75x21x4 air filter specification. Pleated electrostatically charged filter material traps airborne contaminants according to the ASHRAE MERV rating. Material is free of chemicals. Note: The example filter image as shown is not the actual dimensions and is displayed for design purposes only. Catalog and 12.75x21x4 air filter specs last verified on 03/24/2020.
Shipping and Returns
- Our current lead times noted at the top of the page are due to backlogs, supply chain issues, and staffing shortages. We apologize for the inconvenience.
- 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.