Electrical Box, Box Type Handy, Number of Gangs 1, Bracket Type -, Capacity 16.5 cu in, Material Galvanized Zinc, Number of 1/2 In. Back Knockouts 0, Number of 1/2 In. Side Knockouts 0, Clamp Type -, Number of 3/4 In. Back Knockouts 2, Number of 3/4 In. Side Knockouts 6, Nominal Depth 2 1/8 in, Nominal Length 4 in, Nominal Width 2 in, Color Silver, Standards UL File E195978