Modular extension pack enabling an optional working height of 5.5m (when used in conjunction with Horizon Modular Base Pack & Guardrail Pack) Open Height (m) 4.62 Material Aluminium. Usage Type Heavy Duty. Warranty 3-Year. Standard HD1004 Class 3. Platform Height (m) 3.5. Open Depth (m) 0.78. Weight (kg) 29