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The 20 Ft Tunnel Container The is a double-end entry shipping container that gives better access to storage products. It also features an adaptable design that permits it to be used to serve a variety of functions such as converting into an office space or living space. The containers are constructed from corrosion-resistant Corten steel and meet ISO standards. They are water- and wind-tight and are easily transported via rail, truck, or ship. High-Quality Material