Buyers Products Pro Series Smooth Aluminum Underbody Truck Box with Diamond Tread Door gives Contractors, Trades, Trailer Operators and Pros durable, secure, and weatherproof organization for their truck or trailer. These truck tool boxes are ideal for use on flatbed trucks, stake bodies, dump bodies, utility bodies, and flatbed trailers. The rigid, extruded door frame and 0.125 in. thick smooth aluminum provide maximum durability. The external rain gutter with an automotive bulb seal will protect tools and equipment from moisture and grime. The 3-point locking, die-cast compression latch will provide maximum security no matter how rough the road gets. Corrosion-resistant, and built to last, the stainless steel bolt-on hinge with a 1/4" pin ensures long-lasting use and durability.