Material: Aluminum Total height: 2M Open size: 200x46x6.5cm Folding size: 68.3x46x6.5cm Hight between steps: 27.5cm Number of steps: 7steps Tickness of alum: 1.5MM Max load: 150Kg N.W(Kg): 5.1 G.W(Kg): 6 1*20' : 1300PCS 1*40'HQ: 2900PCS Packing Size: 69.5x47x7.5cm packing not use foam