Trimble Company of Virginia is a recognized member of Intertek's Certified Machiner Program, allowing them to modify Intertek Certified Fire Doors as detailed within the applicable Intertek specification listings. Trimble Company of Virginia's site at 1510 Southside Drive, Salem, VA 24153 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.