Our Accumulair 12.5x21x4 air filter is exactly engineered to be compatible with same sized 12.5x21x4 air filter style. Pleated static charged filter media traps airborne contaminants according to the ASHRAE MERV specification. Material is free of chemicals. Note: The example filter image shown is not the actual dimensions and is included to show construction purposes. Catalog and 12.5x21x4 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, and up to 24 days for non-standard, 0.5" , and bag filters.
Delivery normally takes another 1-3 days depending on location.
- 30-day 100% return policy.
Payment & Security
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