The standard containment product range consists of flexible, adaptable and user-friendly components. The individual components equate the tolerances of the racks, which are not usually installed with millimeter precision. The system fits not only onto Knürr racks but also onto most commercially available racks. The racks do not need to be installed in pairs. The top panels are transparent to allow use of the available room lighting. The standard top elements are ready for the patented SmartAisle™ controller.