DC-901100-1.5, Duracast 1100 Gallon Plastic Storage Tank | 901100 These plastic storage tanks stand out among other plastic alternatives because of their quality, strength and convenient features. Manufactured using “rotomolding” technology, these tanks are designed to be a one-piece structure, without any seams or joints. These storage tanks are able to combat corrosive contents, making them perfect vessels for storing harmful chemicals and many acidic liquids. These tanks feature a 16-inch vented lid that you can access for filling and cleaning them. They are also equipped with gallon calibrations that are molded into the plastic for determining content levels quickly. People can use these tanks for commercial food processing, waste water processing, water reclamation systems like carwashes, mining and manufacturing. This is a 1.5 specific gravity tank.