Conduit Outlet Box, 3 In Diameter, Electrogalvanized and Aluminum Acrylic Paint (Body);Natural (Cover) Finish, For Use With Hazardous Area Conduit System , 1/2 In Hub Size, Copper Free Aluminum (Cover);Feraloy Iron Alloy (Body) Material, Round, Cast Ears On Cover to Permit Easy Removal and Tightening;Four Standard Mounting Pads Except For Boxes With Bottom Hubs;Neoprene "O" Ring Standard to Meet Nema 4 Requirements;Taper Threaded Hubs to Pro;Ten Different Hub Arrangements;Threaded Cover Openings, Nec/Cec:C