Model: WT-3.8+3.8M Material: aluminum Thickness of aluminum: 1.5mm Open size: 3810x475x88mm Folding size: 875x475x88mm Hight between steps: 295mm Step number: 13 Top step to ground: 3810mm Loading capacity: 150kg Packing: 1pcs/carton Carton size: 525x230x905mm G.W/N.W: 23.7/22 kg Container: 20FC/40HQ=240/620pcs