Twin City Hardware Company is a recognized member of Intertek's Certified Machiner Program, allowing them to modify Intertek Certified Fire Doors and Frames as detailed within the applicable Intertek specification listings. Twin City Hardware Company's sites at 5631 University Heights Blvd,
Ste 114, San Antonio, TX 78249, USA is subject to routine inspections to verify that modifications to Intertek Certified Fire Doors and Frames are done in compliance with the requirements of the Intertek specification listings.
