Fiberglass platform ladder designed for prolong standing at one height. Nonconductive fiberglass rail with fully serrated aluminium step & platform. Slip Resistant Platform : Large Fully serrated platform 15" wide 20" deep, it locks ladder. Heavy Gusset Bracing : Two pairs of gusset support at the bottom step. All gussets are heavy duty steel. Slip Resistant Rubber Feet : Aluminum feet with thick rubber tread. Top Rail Guard : To serve as a railing for working from platform.