Burton Lumber Company (Washington/St George) is a recognized member of Interteks Certified Machiner Program, allowing them to modify Intertek Certified Fire Doors as detailed within the applicable Intertek specification listings. Burton Lumber Company (Washington/St. George) at 222 W. Indstrial Dr., Washington, UT 84780 is subject to routine inspections to verify that modifications to Intertek Certified Fire Doors are done in compliance with the requirements of the Intertek Specification listings.