METAL FRAMING, BACK TO BACK COMBINATION TYPE; LOW CARBON STEEL MATERIAL; DURA-GREEN. FINISH; 20 FT; 1-5/8 INCH; 1-5/8 INCH; SOLID CONFIGURATION; 12 GAUGE THICKNESS; COLD FORMED PROCESS; 2.627 LB/FT WEIGHT; 2 CHANNEL(S); 0.773 SQ INCH CROSS SECTION AREA