Grounding-Bonding Busbar and Bracket Assemblies: Type - Insulated Busbar Assembly; Bar Width - 2.00 in (51mm); Bar Length - 24.00" (610mm); Hole - QtySize - (36) 0.28"(7mm); Hole Pattern - rows x holes - 2 x 18; Hole Quantity Total - 36; Bar Thickness - 0.25" (6mm); Mounting Height - 3.75" (95mm); Material - Copper Bar, Stainless Steel Brackets, Glass Reinforced Polyester Insulators; Manufacturer Series - Type BBB