My box is a over the rail, two bay box. Thin diamond plate sheet metal riveted to the top and it has a drop down for a cooler. I bought it from a guy for $150 about 2 years ago.
It’s made to fit an extend cab Chevy with a toolbox. Too long to use with a crew cab and tool box. I’m going to make another one that is the correct length for this truck, and a few inches taller. Still two bay, but I’m going to put a rail around the top with another rail inside for the cooler so that it isn’t taking head room away from the dogs.
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