DOUBLE CHANNEL TYPE; ASTM A1018 STEEL MATERIAL; DURA-GREEN FINISH; 36 INCH; 6-1/4 INCH; B22A CHANNEL USED ON; 1-5/8 INCH CHANNEL WIDTH; 7/32 INCH THICKNESS; HOT ROLLED PICKLED OILED PROCESS; 550 LB LOAD RATING; 3-1/4 INCH CHANNEL DEPTH