Our open boxes are a great solution on hauling a large amount of gear with you on your adventures.
Open Box that measures 42 1/2" wide, 72" long and 16" High. We use 1 1/2" square aluminum tubing for the frame, and then use 3/4" stained plywood for the floor and 1/2" stained plywood for the fronts and sides. We have tie down points all along the outside of the box so you can run your lines or bungees to those to secure your loads.