Storerooms in archives, in trade and industry, in the office and in the workshop are always too small. The sliding shelf unit provides double the storage space. The principle is simple: the individual shelf units are pushed together and opened only where something needs to be taken out. The individual components of the shelf unit roll smoothly on rails. The sliding shelf unit is easy to operate even when it is fully loaded. If the sliding shelf unit is located in a freely accessible room, it can be secured by a robust central locking system with a cylinder lock.