29 and ANSI A14.Step Stool Product Group Rolling Platform, Number of Steps 1, Overall Height 12 in, Material Steel, Load Capacity 450 lb, Top Step Height 12 in, Top Step Depth 7 in, Bottom Width 27 in, Base Depth 19 in, Color Yellow, Finish Powder Coated, Standards OSHA 1910.7, Ladder Actuation Spring-Loaded Casters, Step Tread Expanded Metal, Step Width 24 in.