This scaffold has a standing platform of 6′ x 30″. It has a max standing height of 6′ per section, adjustable at 2.5″ increments.  Up to two sections can be stacked to give a max platform height of 12′. This can be used on stairways, but the stairway must be at least 32″ wide. On stairs, it gives a standing platform of 6′ tall per section measured from the lowest stair. Above all we want you to be safe. Therefore casters, safety rails, and outriggers are available for no additional charge. This scaffold is for indoor use only.