Arguably the most robust 5 tread platform step ladder on the market. Designed for industrial use, the ladder is constructed from 50mm scaffold tube for extra strength. The 100mm deep treads are spun-rung into the side of the stiles giving greater strength. The work tray takes care of your tools Closed Height (m) 2.16. Open Height (m) 2.16 Rungs/Treads 5 Material Aluminium. Usage Type Heavy Duty. Warranty 5-Year. Standard EN131. Platform Height (m) 1.2. Open Depth (m) 1.14. Weight (kg) 12.5