By attaching additional racks to starter standard duty double sided cantilever racks, you can create the industrial racking system needed to fulfill your requirements. Connect multiple add-on units to configure a continuous run of storage. *Please note, the selected arm type below may differ from the style displayed in the product image. Bolts to correspondingstarter unitto expand existing storage space 6 straight or inclined arms, with or without lip Arms are adjustable on 3" centers Needing individual components? BrowseHERE.