HS Code 4405 — Wood Wool and Wood Flour

This code covers wood wool, which consists of curly shavings used for packaging and filtration, and wood flour, which is finely ground sawdust used as a filler in plastics or explosives. These materials are primarily used for industrial protection, animal bedding, or as components in composite manufacturing.

What's included

Excelsior wood shavings
Fine wood dust (flour)
Protective wood curls
Wood fibre for animal bedding

What's excluded

Wood chips for pulping → use 4401 (Wood chips for fuel or pulp are classified as primary wood waste.)
Sawdust not ground into flour → use 4401 (Raw sawdust is considered wood waste/scrap rather than processed wood flour.)

Common examples

Biodegradable excelsior packaging filler
Ultra-fine 80 mesh wood flour
Wood wool rope for fire-lighting
Pine wood flour for WPC manufacturing

Frequently asked questions

Is wood wool treated differently for customs?

Yes, it often requires phytosanitary certification to prove it is free from pests, especially when used as a packing material.

Trade & shipping notes

Typical duty range: 0% - 5%
Documentation: Requires Phytosanitary Certificate in most jurisdictions to prevent pest migration.
Typical shipping mode: FCL
Top exporters: China, Germany, Canada
Top importers: United States, Japan, South Korea

Key takeaway

Used mainly for packaging and industrial fillers; check ISPM 15 compliance.

Wood Wool and Wood Flour