9406.20.00.00
Modular building units, of steel
Classification path
- Prefabricated buildings
- Modular building units, of steel
Rates of duty
- General (MFN)
- 2.9%
- Column 2Cuba, North Korea, Russia, Belarus
- 45%
- Unit of quantity
- No., m2
Trade agreement rates
Related lines in heading 9406
- 9406.10.00.00Prefabricated buildings / Of wood2.6%
- 9406.90.01.10Prefabricated buildings / Of metal / Greenhouses / Commercial2.9%
- 9406.90.01.20Prefabricated buildings / Of metal / Greenhouses / Other2.9%
- 9406.90.01.30Prefabricated buildings / Of metal / Other2.9%
- 9406.90.01.50Prefabricated buildings / Animal sheds of plastic2.9%
- 9406.90.01.90Prefabricated buildings / Other2.9%
About heading 9406
Prefabricated buildings
Heading 9406 covers prefabricated buildings. It is split first by material, with separate lines for wood and steel modular building units, then within other prefabricated buildings by metal versus other material and by specific uses such as greenhouses and plastic animal sheds.
Full guide to heading 9406Products in this heading
- Wooden prefabricated cabins and sheds
- Steel modular building units
- Metal commercial greenhouses
- Metal non-commercial greenhouses
- Metal prefabricated buildings other than greenhouses
- Plastic animal sheds
- Other prefabricated buildings not of wood or metal
Frequently asked questions
What is the HTS code for a wooden prefabricated building?
Wooden prefabricated buildings are classified under 9406.10.00.00, with a general (MFN) duty rate of 2.6%.
What is the duty on a steel modular building unit?
Steel modular building units are classified under 9406.20.00.00, with a general (MFN) duty rate of 2.9%.
How do I classify a metal greenhouse?
A commercial metal greenhouse is classified under 9406.90.01.10, with a general (MFN) duty rate of 2.9%. A metal greenhouse that is not commercial is classified under 9406.90.01.20, also at a general (MFN) duty rate of 2.9%.
Source: USITC Harmonized Tariff Schedule, retrieved October 22, 2026.