Decko 49144 Heavy Duty Shelf Bracket, 10.5-Inch by 7.5-Inch, Black, 10-Pack Use on 12" dimensional lumber, actual shelf width approximately 11-1/4" Bracket measures 10.5-Inch by 7.5-Inch size Made from high quality steel, 3 predrilled 1/4" holes on both sides for fasteners not included Use in home, shop, garage, or business, great for shelving systems With Decko shelf brackets the possibility are endless