Builders FirstSource Inc (American Fork, UT) 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. Builders FirstSource Inc (American Fork, UT)’s site at 268 E. 1600 So., American Fork, UT 84003, 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.