Buyers Products Smooth Aluminum Slide Out Truck Bed Box is a secure truck or van storage drawer that holds up to 500 lb in the drawer and 800 lb stacked on top. The 12 in. by 24 in. by 40 in. model can easily be installed in a cargo van so that the drawer rolls through the side-door opening. The Slide Out Truck Bed Box's heavy duty reinforced aluminum construction lets you load up to 800 lb (evenly distributed) on top.