Ballymore Steel Rolling Safety Ladder mounted on four spring loaded swivel casters that retract under user’s weight.  7” deep steps with 10” deep top step.  14” deep top step on 4-7 step FSH models.   450 pound capacity.  Finish:  Gray powder coat finish.  Built to OSHA and ANSI standards.  Tread options:  Expanded Metal Treads provide a slip-resistant surface to give you better traction. Their self-cleaning design allows dirt and debris to fall through the tread, making them perfect for warehouse applications. Abrasive Mat Treads are ideal in areas with less dirt. Their abrasive surface provides the non-slip footing you need for safe climbing, making them the best choice for many office/retail applications. Heavy Duty Serrated Grating is ideal for the most severe wet and slippery conditions. The ultimate in slip-resistance and self-cleaning treads with flow-through construction. Perforated Tread provides excellent slip resistance.  This tread design is used extensively in retail and storeroom applications.