Our Accumulair brand 13x21.5x0.5 air filter is specifically built to be a replacement for same sized 13x21.5x0.5 air filter specs. Pleated electrostatic charged filter material traps contaminants relative to its ASHRAE MERV specification. Material is free of chemicals. Notice: The sample filter image displayed is not the actual dimensions and is included to show style purposes. Database and 13x21.5x0.5 air filter variations last verified on 03/24/2020.
Shipping and Returns
- Lead times vary and are listed at the top of the website. Non-standard sizes (custom, 0.5" thick, etc) take 3-4 weeks for delivery.
- 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.