4', Fiberglass, Type 1A Step Ladder, 300 LB Duty Rating, Fiberglass Rail Protection, Molded Top With Tool Slots, Inside Spreader Braces, Slip Resistant Rubber Feet, Meets OSHA, CSA & ANSI Standards, Non-Conductive Fiberglass, Double-Rivet Step Construction, Full Chanel Non-Conductive Fiberglass Rail, Wide Back Braces.