Material: Aluminum Total height: 2.6M Open size: 261x46.8x7.5cm Folding size: 74.8x46.8x7.5cm Hight between steps: 27.5cm Number of steps: 9steps Tickness of alum: 1.5MM Max load: 150Kg N.W(Kg): 7.1 G.W(Kg): 8.2 1*20' : 560PCS 1*40'HQ: 1288PCS Packing Size: 78.5*53.5*13.5CM