Master Step office ladders were first introduced to compliment business interiors, but have since expanded for use in retail, warehousing and even manufacturing applications. Comfortable climbing steps and platformare covered with ribbed vinyl matting as standard. Office ladders are equipped with easy rolling 2" spring casters for quick start and stop mobility. Tread width is standard at 16"One through six step sizes are available with single or double top steps. Left, right or double handrail arrangements and a removable filing shelf are offered for added convenience. 450-lb load rating, 56° climbing angle. Office ladders meet applicable OSHA and ANSI standards. CAL-OSHA models also available (items sold in California must have dual handrails on 4-6 step models. 6 step model must have 42" dual handrails).