Our Accumulair brand 16x20x4 air filter is solely constructed to be compatible with same sized 16x20x4 air filter style. Pleated electrostatically charged filter media traps contaminants in the air according to the MERV standard rating. Chemical free material. Notice: Example filter image displayed is not to scale and is included to show construction only. Catalog and 16x20x4 air filter specs last updated on 03/24/2020.
Shipping and Returns
- Shipping is FREE to the contiguous United States.
- Our current lead times are 3-5 days for stocked standard filters, up to 3 weeks for non-standard and 0.5" filters, and up to 8 weeks for bag filters.
Delivery normally takes another 1-3 days depending on location.
- 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.