... (excluding ceiling size) 5. Standard steel beam C80 # 6. Two-C80 # steel column 7. Chevron beam truss roof (C60 # ... Roofing Sandwich Plate 50mm thick 11. Steel frame composite board door, specification 960mm * 2030mm 12. PVC sliding sash windows, ... size 1740mm * 950mm 15. Single-colored steel door open, specification 960mm * 2030mm, two-colored steel door open, specification is 1740mm * 2030mm, red, ...