Founded in 1923, Kenworth Truck Company is one of the leading manufacturers of heavy- and medium-duty trucks in the United States. Its trucks feature crossmembers, huck-bolted cabs, staggered steps, bulkhead doors, air suspensions, fairings and headlights. The company s truck interiors feature hanging closets, storage shelves, mattresses, television s, dual speakers, sofa bed s, music systems, cabinets, drawers and refrigerators. Its interiors are available in grey, blue, diamond, black and red colors, as well as in wood, vinyl, leather and carpet finishes. The company additionally provides a variety of truck accessories, such as air horns, axle covers, bug deflectors, bumper guides, trim panels, chrome exhausts, hub caps and mud flaps. It also offers mirrors, fenders, tool boxes, wood trim, engine heaters and electronics. The company provides roadside assistance and preventive maintenance services. It is a division of PACCAR, which is one of the largest manufacturers of heavy-duty trucks in the world. Kenworth Truck Company maintains one of its manufacturing plants in Chillicothe, Ohio.