4418 - Builders' joinery and carpentry of wood, including cellular wood panels and assembled flooring panels; shingles and shakes:
Sub-classifications
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4418 1100 00
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4418 5000
Overview
Heading 4418 encompasses a broad range of finished or semi-finished wood products specifically designed for use in construction and building applications. This category includes joinery items like doors, windows, and their frames, as well as carpentry elements such as beams, posts, and formwork used in concrete construction. It also specifically calls out assembled flooring panels, shingles, and shakes, all of which are typically made entirely or predominantly of wood and are intended for structural or decorative purposes in buildings.
Unlike sibling categories that might cover raw wood (Chapter 44), wood-based panels (Chapter 44), or other wood articles not for construction, 4418 is focused on components that are integral to the structure or finishing of buildings. Its scope is narrower than Section IX's general coverage of wood and articles of wood, concentrating specifically on manufactured items with a building application.
Within heading 4418, several subcategories further refine the classification based on the specific function or type of construction product. These include distinct classifications for windows and their frames, doors and their associated frames and thresholds, and a separate provision for shingles and shakes. Other subcategories exist for specialized items like formwork for concrete construction, assembled flooring panels, engineered structural timber products, and a general "other" category for items that do not fit into the more specific headings, ensuring precise classification based on the item's intended use and construction role.