2-1/8" deep, 4-11/16" junction boxes with metal stud brackets and clamps for flexible metal conduits are larger boxes that are installed when larger sized conductors or wiring devices that use flexible metal conduits are installed. These boxes are great for industrial applications. Garvin Industries’ 2-1/8” deep 4-11/16” boxes come with built in clamps for flexible metal conduits to speed up installation and save connector costs.