This Cargo System Bracket secures the SBOX031 to the side of the Pro Bed System and Pro Bed Rack Kit. The SBOX031 is side-mounted, allowing quick and easy access to all your adventure gear while keeping it safe from the elements. Made of high-strength steel and sealed with the same durable, weather-resistant powder coating as the Front Runner Racks. The top and bottom latches are lockable with a RRAC134, preventing unwanted access.