The description of the item 73083010 of Philippines HScode: Structures (excluding prefabricated buildings of heading 94.06) and parts of structures (for example, bridges and bridge sections, lock gates, towers, lattice masts, roofs, roofing frameworks, doors and windows and their frames and thresholds for doors, shutters, balustrades, pillars and columns) of iron or steel; plates, rods, angles, shapes, sections, tubes and the like, prepared for use in structures, of iron or steel: Doors, windows and their frames and thresholds for doors: Doors, of a thickness of 6 mm or more but not exceeding 8 mm