ASTM A1018 STEEL MATERIAL; GREEN FINISH; 12 INCH; 3-1/2 INCH; CHANNEL/STRUT USED ON; 1-5/8 INCH CHANNEL WIDTH; HOT ROLLED, PICKLED, OILED PROCESS; 252 LB WEIGHT; 600 LB LOAD RATING; 7/32 INCH CHANNEL THICKNESS; 1 VERTICAL MOUNTING HOLE(S)