Tip and roll aluminum angle frame bleachers have an 6″ rise/24″ run. As such no safety fence is requires . Tip N Roll bleachers use a
5″ x 1 1/4″ Grey Performa swivel, 325# rated caster with metal brake. Tip N Roll bleacher have a 2″ x 12″ seat plank and 2″ x 10″ floor plank.