This Filter Hut Accumulair 21x21x0.5 air filter is exactly made to replace similarly sized 21x21x0.5 air filter specification. Pleated electrostatically charged filter media captures airborne particles relative to its ASHRAE MERV rating. Material is free of chemicals. Note: The sample filter image as shown is not the actual dimensions and is displayed for design purposes only. Catalog and 21x21x0.5 air filter statements are up to date as of 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
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.