Designed to make a minimum carbon footprint, these ladders are manufactured with no welding processes involved to reduce material waste and save energy. Easy to assemble & includes stainless steel hardware. Ribbed anti-slip steps for a sure footing. Rail Height: 18-1/2" (47,0cm)Tread Depth: 2-1/2" (6,4cm)Tread Width: 14" (35,6cm)Distance to first step: 11" (27,9cm)Distance between treads: 11" (27,9cm)