Rack supported mezzanines, or shelf supported mezzanines, are systems that offer high-density storage within warehouses or distribution facilities. The second floor becomes another level of storage space. The walkways are built to be the rack aisles, helping pickers locate and select goods within the system - whether manual or automated. Often part of a pick module, the catwalk aisles allow products to be stored above and below the platforms. Rack supported mezzanines offer operations teams with better space efficiency because you can store more goods into more confined spaces and can take advantage of the height of your facility rather than building out.