Portable warehouse ladder for every day use applications. Heavy-duty uniform weight capacity is 350 lb features 58° standard climb angle. Choose either Perforated or Grip Strut steps. Step depth is 7" with a top step depth of 14". Welded square tubular steel construction with powder-coated blue finish. Rubber feet provided for floor protection. Units with 2- to 5-Steps have two all directional spring-loaded swivel casters and two swivel casters with total locks. Units with 6- to 12-Steps have bottom step lock casters for safe use when climbing. Ships knockdown. Ladders comply with OSHA 1910.29, ANSI A14.7 standards.