Shelving units are a classic shelving system that is not only used in warehouses, but also as standard in private households. From a logistics perspective, the storage system falls under the category of warehouse technology. The structure of the shelving unit is such that the goods can be stored on closed shelves made of wood or metal on several levels one above the other. The shelves can be variably attached to the uprights at different heights in a grid of holes. Shelving units enable the storage of non-stackable goods or storage bins (Schaefer boxes). Manual operation is easily possible up to a shelf height of 1.8 m. If the shelves exceed this standard height, however, appropriate aids such as ladders are required. In this case, multiple shelving units can be placed on top of each other to form a multi-tier shelving system.
Although this storage system is probably the most widespread of all shelving types, it is certainly not the most efficient. While the cost/benefit ratio makes it worthwhile for small businesses to use, this type of shelving tends to be inefficient for companies with a certain product range and article volume. One of the clear disadvantages is that the shelf racks can only be operated manually. This system is therefore out of the question for anyone looking for an automated solution. However, the shelving unit also offers advantages. These include, for example, high flexibility, very good utilisation of space and in most cases simple installation.