Electrical Box Box Type Square with Bracket Number of Gangs 2 Bracket Type BOX-LOC Flush Capacity 30.3 cu in Material Steel Number of 1/2 in Back Knockouts 5 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 4 Nominal Depth 2 1/8 in Nominal Length 4 in Nominal Width 4 in Color Silver Standards File E195978 UL 514-A Listed