Built tough with durable, corrosion-resistant 0.125 in. thick smooth aluminum. Cam-Lock hardware is made of high-quality aluminum and allows for the use of a personal padlock (purchased separately). Designed for universal installation (driver's side or passenger side). Unobstructed box opening with no center post. Stainless steel bolt-on continuous hinge with oversized 1/4' pin. Built-in rain gutter with automotive bulb seal. Made in the USA.