Filter Hut's Accumulair 21x23x0.5 air filter is solely made to replace similarly sized 21x23x0.5 air filter type. Pleated electrostatic charged media captures contaminants in the air relative to its MERV standard specification. Free of chemicals. Note: The sample filter picture displayed is not the actual dimensions and is included to show design only. Database and 21x23x0.5 air filter variations last verified on 03/24/2020.
Shipping and Returns
- Our current lead times are 4-6 business days for stocked filters (standard 1"-5" thick sizes), and up to 8-12 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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