Portable ladder conveniently folds for storage. Constructed of square tubing framework which handles capacities up to 350 lb Features 30"H removable hand railing. While 12 step models feature a 36" removable hand railing 14"D top platform and a blue baked-in powder-coated toughness with 11- and 12-Step models an industrial blue painted finish. Each step measures 16-13/16"W x 7"D and is spaced 10" apart. Models with 8- and 12-Steps have steps that measure 23-9/16"W. Unit rolls around on two large 10" x 2-1/2" hard rubber wheels. Units are shipped crated some assembly required. Complies with ANSI A14.7 and OSHA 1910.29 specifications.