Extension Ring Box Type Handy Number of Gangs 1 Bracket Type - Capacity 11.5 cu in Material Galvanized Steel Number of 1/2 in Back Knockouts 0 Number of 1/2 in Side Knockouts 8 Clamp Type - Nominal Depth 1 1/2 in Nominal Length 4 in Nominal Width 2 in Color Silver Standards UL File E195978