Marling Lumber Company dba Marling Doors & Hardware 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. Marling Lumber Company dba Marling Doors & Hardware’s site at 2921 Kennedy Rd, Janesville, WI 53545 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.