Our Accumulair brand 19.5x21x4 air filter is exactly built to replace same sized 19.5x21x4 air filter specification. Pleated electrostatic charged media traps airborne contaminants relative to its MERV rating. Chemical free material. Notice: The sample filter picture as shown is not to scale and is shown for style purposes only. Database and 19.5x21x4 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.
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.