Lund 57 in Diamond Plate Aluminum Full Size Crossbed Truck Tool Box with mounting hardware and keys included, Silver5th wheel truck box features a 3 lid design that offers easy access to your storage, even when you are hauling a 5th wheel trailer. Constructed of 0. 056 in. aluminum diamond plate material with fully welded seams. Heavy duty 3 finger double latch paddle handles with an oversized stricker pin for added security. Heavy duty gas shocks on each lid to make it easy to open and close. Weather gasket on each lid to seal out the elements. Mounts to floor of