Builders Millwork, Inc. 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 Millwork, Inc.’s site at 250 Industrial Drive, Mondovi, WI 54755, 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.