William S. Trimble Co. is a supplier and subcontractor serving the construction industry in three divisions. The Openings div ... ision, which includes commercial doors, frames, hardware, and other specialties, an overhead door division, known as Overhead Door Company, and a security division under the same Trimble Security Integrations. We have three locations in Tennessee. This includes Knoxville, Johnson City, and Chattanooga, as well as one location in Roanoke, Virginia. read more