Hardcoat Technologies, 4312 Papermill Dr, Knoxville, TN 37909, US

Founded in 1936, William S. Trimble Co. Inc. is a full-service supplier of building specialties. Based in Knoxville, Tenn., the company is divided in to three divisions. William S. Trimble Co. is a supplier of Steelcraft commercial doors (wood and hollow metal), frames, windows, toilet partitions and toilet accessories. In addition, the company offers a variety of hardware products, including locks, cylindrical levers, hinges, closers and electronic hardware products. Trimble Residential Products is a distributor of residential doors, windows, hardware and skylights. It also distributes Kolbe windows and doors, Emtek hardware and Velux skylights. Overhead Door Company of Knoxville, which is a division of William S. Trimble Co. Inc., is a supplier and installer of commercial and residential overhead garage doors, commercial rolling steel doors, security grills, dock equipment and other traffic related opening products.