Connect additional racks to extend the existing storage space of starter heavy duty single sided cantilever racking. These units can be assembled to create a continuous run of storage against a wall in your facility. *Please note, the selected arm type below may differ from the style displayed in the product image. Attaches to correspondingstarter unitto increase storage space 4 straight or inclined arms, with or without lip Arms are adjustable on 3" centers Needing individual components? BrowseHERE.