Extension device: to increase the height of the shelving, extension units are fitted into the existing shelf supports and are each secured with 4 through bolts. The extension units must be inserted at least 50 mm into the existing shelf supports. The top shelf must be removed first. Specification: made of galvanized sheet metal. Includes fitting material for one pair of shelf supports. The static calculations for the extensions are performed by Lista specialists. Transfer stations and steps for pallets as well as intermediate shelves are available on request.