1 1/2' x 16 gauge steel bench stands on 8' centers. Hot dip galvanized. 1' sq. x 14 gauge level adjustment tubes. 1/2' adjustment rods for 3' variable. Standard height: 30' at bench rail. Foot plates are welded to bench stands. 14 gauge Galvalume roll formed bench crossers at 22' centers. Extruded aluminum bench side rail. 3/4' 13 gauge expanded metal tops. 2' diameter x 14 gauge galvanized stabilizer pipes with swedged ends. All corner sections are mitered. All required fasteners are included.