Our Accumulair 11.5x21x0.5 air filter is specifically designed to replace similarly sized 11.5x21x0.5 air filter specification. Pleated static charged filter material captures contaminants in the air relative to its ASHRAE MERV rating. Chemical free. Notice: The sample filter image displayed is not the actual dimensions and is shown for design purposes only. Database and 11.5x21x0.5 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
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