Vertical Water tanks are designed to stay above ground and store water. We carry a various brands of tanks; Enduraplas, Bushman, and Norwesco. Most of the tanks are rotationally molded from polyethylene with UV stabilizers. This additive protects the tank from sun degradation, so it can be kept in a yard or elsewhere without worry. All tanks are equipped with a vented Manway and have Bulkheads installed at the bottom and top for your inlet/outlet. Manway and Bulkhead sizes vary from tank to tank, depending on gallon size.