Our Accumulair 20x21x1 air filter is exactly engineered to be a replacement for same sized 20x21x1 air filter type. Pleated static charged media traps contaminants according to the ASHRAE MERV rating. Free of chemicals. Note: Sample filter picture shown is not the actual dimensions and is shown for style only. Catalog and 20x21x1 air filter variations current as of 03/24/2020.
Shipping and Returns
- Shipping is FREE to the contiguous United States.
- Our current lead times are 3-5 business days for stocked filters (standard 1"-5" thick sizes), up to 3 weeks for made-to-order filters (non-standard and 0.5" sizes), and up to 8 weeks for bag filters.
Delivery normally takes another few days depending on location.
- 30-day 100% return policy.
Payment & Security
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