Section 15 Base metals and articles of base metal 76 Aluminium and articles thereof. 76 10 Aluminium structures (excluding prefabricated buildings of heading 94.06) and parts of structures (for example, bridges and bridge-sections, towers, lattice masts, roofs, roofing frameworks, doors and windows and their frames and thresholds for doors, balustrades, pillars and columns); aluminium plates, rods, profiles, tubes and the like, prepared for use in structures. Commodity Code Description 76 10 10 Louvre type windows and their frames. 76 10 90 Other