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40 Ft Tunnel Containers With double doors on both ends 40-foot tunnel containers are perfect for a wide range of applications. These modern (one-trip) shipping containers are well-liked in boiler rooms and storage for machinery (you don't have to reverse your vehicles or diggers to get in or out!) They are also excellent for offices and workshops. They are made of sturdy corten steel and are designed to withstand tough conditions. Wide range of applications that are suitable The 40