BACK TO BACK COMBINATION TYPE; STRIP STEEL MATERIAL; HOT DIP GALVANIZED FINISH; 20 FT; 1.625 INCH; 3.25 INCH; 12 GAUGE THICKNESS; COLD FORMED HOT ROLLED PICKLED OILED PROCESS; 2 CHANNEL(S); 1.114 SQ INCH CROSS SECTION AREA; SUPERSTRUT[R] BRAND