The Shelf Unit Mounting Kit bolts to reinforced sections of the van wall through existing holes in the low roof NV 146 in. wheelbase van for faster, easier and more secure shelving installation. Extruded aluminum upper mounting rail distributes load of shelf units and contents and provides flexible mounting locations during installation Includes floor mounted rail to install in floor mounting holes. Mounts Two Weather Guard Van Shelving Units On The Drivers Side And One Shelf Unit On The Passenger Side Of A Low Roof Nissan Nv 146 in. Wheelbase Van Extruded Aluminum Upper Mounting Rail Distributes Load Of Shelf Units And Contents And Provides Flexible Mounting Locations During Installation