Grounding Busbar, Material Copper, Description/Special Features Busbar Pre-assembled with Brackets and Insulators, For Use With Service Entrance Grounding, Grounding Bar Holes and Size (16) 1/4 in, (16) 7/16 in, Grounding Bar Length 16 in, Grounding Bar Thickness 1/4 in, Grounding Bar Width 4 in, Ground Wire Included No, Standards cULus Listed, TIA-607 Compliant