The IBC tanks are made out of HDPE plastic materials placed in an aluminum lattice box. A 2 or 3 inch ball valve may be found on the narrow side of the tank for easy removal of the water. A screw hole (150mm or 225mm) may be found on top for fluid intake. The water tank is on an aluminum pallet. It is possible to stack the water tanks, and to connect them with our Tank Connector Set. An IBC tank is needed.