METAL FRAMING, BACK TO BACK COMBINATION TYPE; ASTM A1011 LOW CARBON STEEL MATERIAL; DURA-GREEN FINISH; 120 INCH; 1-5/8 INCH; 6-1/2 INCH; SOLID CONFIGURATION; 12 GAUGE THICKNESS; COLD FORMED PROCESS; 2 CHANNEL(S); 0.391 INCH DEFLECTION