Lund 9748 48-Inch Aluminum Side Mount Box, Diamond Plated, Silver 48-inch side mount truck tool box made of 0.06-inch aluminum with a diamond plated finish. Ideal for adding extra secure storage while not compromising your view of the road or the clean look of your vehicle. Measures 48-inches (L) by 12.5-inches (H) by 8-inches (W)^Comes with a limited lifetime warranty that protects against defects in materials and workmanship