Electrical Box Box Type Gang Number of Gangs 2 Bracket Type - Capacity 47 cu in Material Galvanized Steel Number of 1/2 in Back Knockouts 3 Number of 1/2 in Side Knockouts 12 Clamp Type - Number of 3/4 in Back Knockouts 2 Number of 3/4 in Side Knockouts 12 Nominal Depth 1 5/8 in Nominal Length 4 1/2 in Nominal Width 6 13/16 in Color Silver Standards UL