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April 2024, question 33
Classification · Classification: GRIs, notes and headings
What is the CLASSIFICATION of nonalloy (carbon) steel doors to be used in offshore windmill turbines? The doors will be used to access the monopile’s foundation and wind turbine.
- 7308.30.1000
- 8412.90.9081
- 7308.30.5050
- 7325.10.0080
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CBP's answer: C. C: 7308.30.5050
Heading 7308 names structures and parts of structures of iron or steel, including doors and windows and their frames and thresholds for doors. Steel doors for a turbine foundation fit that wording under GRI 1, so the answer is the doors line of 7308.30, 7308.30.5050 (C), not a machinery part.
doors and windows and their frames and thresholds for doors, shutters, balustrades, pillars and columns 7308.30.50.50
Search for: doors and windows and their frames and thresholds for doors
CBP's key cites: General Rules of Interpretation; HTSUS 7308.30.5050
Question and key from CBP's April 2024 exam and answer key. The walk-through is ours; quotes are from the pinned editions in the reference viewer (HTSUS 2026 Basic, 19 CFR 2025 edition).