Choose from Standard or Slimline. Heavy-Duty Straight 12" White Slatwall Shelf Bracket. Use the 12" White Slatwall Shelf Bracket for Glass, Wood, or Bullnose shelving. The Standard offers a 2" wide backplate whereas the Slimline offers a narrow 1 1/2" wide backplate making the shelf bracket less visible and able to fit in tighter spaces. In stock.