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Tunnel Shipping Containers These are new (one trip) shipping containers that have two cargo doors at both ends. This makes it easier to load and unloading. It's an excellent choice if you are looking to build a structure that has two entrance points, such as a bridge or tunnel. These shipping containers are also equipped with fork pockets that can be used by industrial forklifts of large size. They also have a minimum of two air vents, which guarantee the proper circulation of air thr