Analysis
Subheading 7308.30 covers doors, windows and their frames and thresholds for doors, within heading 7308. The first six digits are shared by every country that uses the Harmonized System, so this part of the code is the same in the US, UK and EU schedules; the 2 US tariff lines below it are national.
Every one of its 2 tariff lines is duty-free at the general rate, so classification within the subheading affects statistics and Chapter 99 measures rather than the base duty.
The US splits it as follows: 7308.30.10 for of stainless steel (duty-free) and 7308.30.50 for doors, windows and their frames and thresholds for doors: other (duty-free).
By Census's concordance, most of its statistical lines are made by Metal Window and Door Manufacturing (332321). Those are the NAICS industries a US producer of these goods would report under.
Goods only reach 7308.30 once they fall within heading 7308 (structures (excluding prefabricated buildings of heading 9406) and parts of structures…). Under General Rule 6, subheadings are then compared only with others at the same level, so a product is matched against its siblings, not against lines elsewhere in the chapter.
Tariff lines
| Line | Description | General rate |
|---|---|---|
| 7308.30.10 | Of stainless steel | Free |
| 7308.30.50 | Doors, windows and their frames and thresholds for doors: other | Free |