Strong spun-rung 4 tread platform step that is light & easy to handle. Ideal for offices & areas with restricted storage space. Closed Height (m) 1.51. Open Height (m) 1.51 Rungs/ Treads 4 Material Aluminium. Usage Type Medium Duty. Warranty 3-Year. Standard EN131. Platform Height (m) 0.78. Weight (kg) 4.5