This Accumulair 12.75x21x4 air filter is solely made to replace similarly sized 12.75x21x4 air filter specification. Pleated electrostatically charged filter material traps airborne contaminants according to the ASHRAE MERV rating. Material is free of chemicals. Note: The example filter image as shown is not the actual dimensions and is displayed for design purposes only. Catalog and 12.75x21x4 air filter specs last verified 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.
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