One embodiment of the invention is directed to a shipping container forming a rectangular box shape, comprising a pair of side walls, a front wall and a rear wall coupled to the pair of side walls, a top wall coupled to the side walls and the rear walls, a bottom wall coupled to the side walls and the rear walls. The side walls, the front wall, the rear wall and the top wall form top corners. The sides walls, the front wall, the rear wall and the bottom wall form bottom corners. The shipping container further comprises a set of top corner fitting elements disposed at the top corners of the shipping container, each top corner fitting element having an outer aperture, and a set of bottom corner fitting elements disposed at the bottom corners of the shipping container, each bottom corner fitting element having an outer aperture.