HTSBase
HTSUS, United States

4405.00.00.00

Wood wool (excelsior); wood flour

Classification path

  1. Wood wool (excelsior); wood flour

Rates of duty

General (MFN)
3.2%
Column 2Cuba, North Korea, Russia, Belarus
33 1/3%
Unit of quantity
kg

Trade agreement rates

FreeGSP (lapsed since Dec 31, 2020), U.S.-Australia FTA, U.S.-Bahrain FTA, U.S.-Chile FTA, U.S.-Colombia TPA, AGOA (authorized through Dec 31, 2026), E, U.S.-Israel FTA, U.S.-Jordan FTA, U.S.-Korea FTA, U.S.-Morocco FTA, U.S.-Oman FTA, CAFTA-DR, U.S.-Panama TPA, U.S.-Peru TPA, USMCA, U.S.-Singapore FTA

About heading 4405

Wood wool (excelsior); wood flour

Heading 4405 covers two forms of wood material: wood wool, also called excelsior, and wood flour. It is not split into multiple declarable lines in this list; the single line is 4405.00.00.00, with a general (MFN) duty rate of 3.2%.

Full guide to heading 4405

Products in this heading

  • Wood wool (excelsior) for packing and cushioning
  • Wood wool for pet bedding
  • Wood wool for erosion control blankets
  • Fine wood flour used as a filler
  • Wood flour for composite materials
  • Wood flour for incense or sachet blends
  • Wood wool for craft and floral use

Frequently asked questions

What is the HTS code for wood wool?

Wood wool (excelsior) is classified under 4405.00.00.00, with a general (MFN) duty rate of 3.2%.

What is the duty on wood flour?

Wood flour is classified under 4405.00.00.00 and pays a general (MFN) duty rate of 3.2%.

How do I classify wood wool versus wood flour?

Both are classified in 4405.00.00.00 at a 3.2% general (MFN) rate; choose based on form, long strands for wood wool and fine powder for wood flour.

Source: USITC Harmonized Tariff Schedule, retrieved October 21, 2026.

HTS 4405.00.00.00: Wood wool (excelsior); wood flour, 3.2% duty | HTSBase