Surface Cover, Square, Raised, 4-Inch Size, 1/2-Inch Raised, 5 Cubic-Inch Capacity, Hot Rolled ASTM G-90-U, AISI C-1008 0.062-Inch Steel Material, Galvanized Finish, For (1) Ground Fault Receptacle, UL 514-A, CSA Approval, Federal Specification W-J-800 Applicable Standard.