Buyers Products Diamond Tread Aluminum Backpack Truck Box with Flat Floor adds convenient and spacious storage behind the cab. It's ideal for use on flatbeds, stake bodies, dump bodies, and utility bodies. The truck box is built with strong, corrosion-resistant .100 in. thick aluminum. A tough 1/4 in. pin, stainless steel continuous hinges, a rain channel, and watertight automotive bulb seal help keep weather and grime away from your tools. The reinforced locking, die cast compression latch provides a tight seal and helps deter theft. Installation is easy with built-in frame mounting rails and a universal spring-cushioned mounting kit.