Grounding Busbar Material Copper Description/Special Features Busbar Pre-assembled with Brackets and Insulators For Use With Telecom/Data Center Grounding Bar Holes and Size (12) 1/4 in (6) 3/8 in Grounding Bar Length 12 in Grounding Bar Thickness 1/4 in Grounding Bar Width 4 in Ground Wire Included No Includes Panduit GB4B0612TPI-1 Grounding Busbar Standards BICSI/TIA-607-C cULus