DoColBloc support tanks bring concrete in its best shape. Each piece is unique, with an authentic and differentiated appearance. The support tanks have four types of shape and two finishes: Natural (a lighter tone) and Graphite (darker). The microconcrete composite tub guarantees water resistance, eliminating waterproofing concerns: just install and use. In addition, the water outlet valve (VSA) cover design makes it easy to remove and clean. Inclined design on the inside helps promote better water flow. The tub has fine edges and a smooth finish, in addition to the water outlet valve that is hidden by a concrete lid, ensuring continuity of shape and sophistication.