TS punched section with mounting flange, 17 x 73 mm, for door width: 800 mm, L: 690 mm, TS System Chassis 17 x 73 mm, Carbon steel, Zinc-plated, Assembly screws, 73269098, 4 pc(s), 6.526 lbs, 4028177690318, For universal skeleton structures or partial assembly. Simply locate into the punchings and secure.