Super heavy-duty, fiberglass step ladder features highly visible, nonconductive side rails for increased visibility and safety. Large platform provides more standing room to safely access out-of-reach areas. Wide, slip-resistant feet prevent sliding on smooth surfaces to ensure stable use. Spreader arms with wraparound sleeves strengthen its spreader-to-rail connection and protect the arms during use. Each step is quad-braced with zinc-coated, diagonal braces to deliver incredible strength and stiffness. Rear horizontal struts are also reinforced with zinc-coated, diagonal braces for maximum rigidity. Extra-large, heavy-duty safety boots provide increased rail protection and slip-resistance. 4' step ladder supports up to 375 lb.