Add your own 2x4 lumber to make shelving units. 6 ShelfLink shelf brackets included. Each bracket is 15.5" L. x 5" W. x 3" H. Assemble with only a screwdriver; all hardware is included. Support spans up to 8' and 1000 lb. per shelf. 2x4 Basics . Lumber sold separately. Black. 6-pack.