Electrical Box, Octagon Extension Ring, Capacity 15.5 Cu-In, Material of Construction Steel, No of 1/2" Side Knockouts 2, No of 3/4" Side Knockouts 2, Depth 1 1/2 In, Length 4 In, Width 4 In, Standards UL 514-A Listed, File E195978 / CSA listed, File LR-1082. This item has been restricted from sale in the following state (s): []