Stacking structural system, preserving the barrels more carefully and their contents, by not supporting weight on them, provides safety and stability to the barrels, reducing the risks of accidents and economic costs. It contributes speed and safety in the work of barrels optimizing the storage space with the empty support stacked. By increasing the safety of the work, the botonnage can be carried out on the same support thanks to its easy access, due to their disposition. Adaptation to different washing systems (manual, semi-automatic, washing train).