Delta Pro Black 18 inch Tall x 18 inch Deep 36 inch Long Steel Under bed Truck Box is creating a new standard in superior security, performance and convenience for steel under bed boxes. They are covered by a 3 year limited warranty. The features include: a V-Groove door frame which reinforces the body, creates a larger door opening and has a wider surface for weather stripping. There are beveled edges on the high-strength door that fit tight against the V-Groove frame to resist break-ins and moisture. A 16 gauge aluminum continuous hinge provides superior strength and durability. The quick release keyway connectors allow the door to drop down for easier access for storing bulky items. A 3-point locking system locks the door at the top and both sides for superior strength and security. The one-piece housing protects the locking system and strengthens the door. A leak-proof stainless steel rotating T-handle is made for rugged use and reliability. A coated, galvanized steel aircraft cable door supports pivot on a shoulder rivet to prevent twisting. A 12 gauge cold-rolled steel door and 14 gauge steel body stand up to the roughest conditions. There is a 3 year limited warranty.