ASTM B633 TYPE III SC3 16 GAUGE ZINC ELECTROPLATED LOW CARBON STEEL MATERIAL; 5-1/8 INCH L X 5/8 INCH H SIZE; CONDUIT CONNECTION PLATE; CHANNEL USED ON ITEM; APPROVAL UL; INCLUDES (2) 1/4 INCH-20 TPI FLAT HEAD MACHINE SCREW, (2) N224WO CHANNEL NUTS