Buyers Products' XD Series aluminum tool boxes mount to the underbody of a medium- or heavy-duty truck to provide durability and superior sealing, according to the company.

Buyers constructs the two-door barn style boxes of 1/8-inch thick aluminum with an extruded aluminum front frame to increase durability. The extrusion is designed with a rain gutter to help channel water away from the interior of the box. The automotive "bulb seal" gaskets provide superior weather resistance, according to the company.

Heavy-duty bolt-on stainless steel hinges with 1/4-inch pins provide long lasting service. The die-cast three-point latch system uses a built-in compression roller for smoother activation of the locking process.

The tool boxes are offered in two dimensions, including 18-by-18 inches and 24-by-24 inches for height and depth. Buyers offers lengths of 24 inches and 48 inches.