Octagonal Box, Pre-Galvanized, Silver, 15.8 Cu.In Capacity, Knockout Cable Entry, 1/2 In (Side);1/2 In (End);3/4 In (End);3/4 In (Bottom);1/2 In (Bottom) Knockout Size, 5 Knockouts, Wall or Ceiling Mount, 1 Outlet, 1-1/2 In Height, 4 In Diameter, 0.50 LB/Ea