Switch Box, Gangable, Old Work, Welded Construction, 1 Gang, 3-Inch Length, 2-Inch Width, 3-1/2-Inch Depth, 18 Cubic-Inch Capacity, (1) 1/2-Inch Conduit Bottom, (4) 1/2-Inch Conduit Sides, (2) 1/2-Inch Conduit Ends Knockout Size, Hot Rolled AISI C-1008, ASTM G90-U 0.062-Inch Steel Material, Galvanized Finish, Ear Mounting, For Use With 68R Covers, C-5 Type Non-Metallic Sheathed Cable Clamp, UL Approval, Federal Specification W-J-800 Applicable Standard.