Electrical Box, Box Type Round Ceiling Pan, Number of Gangs 2, Bracket Type Adjustable Depth, Capacity 21.5 cu in, Material Steel, Number of 1/2 In. Back Knockouts 1, Number of 1/2 In. Side Knockouts 4, Clamp Type NM-B Clamps, Rated Fan Rated, Nominal Depth 2 1/8 in, Nominal Length 4 1/4 in, Nominal Width 4 in, Color Gray, Standards UL Listed. This item has been restricted from sale in the following state (s): []