Between-the-frame design from Merritt® tool boxes, puts unused frame space to work by adding additional storage for straps, chains, binders or other equipment. Heavy duty aluminum offers protection from the elements, yet is lightweight so it doesn't add excessive weight. Durable enough for standing or stepping on, making it easy to access the back of the truck. Tool box features a diamond plate top and easy installation that uses clamps, so no drilling of the frame is needed. Mounting kit included.