This Stair Unit for Scaffolding makes climbing your scaffolding is safer, easier and faster. Each unit fits on the inside of a walk-through scaffolding set with 7′ spacing and allows you to turn your scaffolding tower into a stair tower. Each flight of stairs is 7′ long when set up and 6’4″ tall. These stairs are OSHA complaint. Each unit comes with two handrails. The ground-level stair unit requires a starter bar (sold separately).