Analysis
HTS 4405.00.00 covers wood wool (excelsior); wood flour under heading 4405 (wood wool (excelsior); wood flour).
The general duty rate is 3.2% of the customs value, which is in the middle of the rates in chapter 44 (67th percentile of 257 lines with an ad valorem rate). On a shipment valued at $10,000 that is $320 in duty before any Chapter 99 additions or preference claims.
Goods that qualify under GSP, the Australia FTA, the Bahrain FTA, the Chile FTA, the Colombia TPA, and 12 others can enter duty-free instead of paying 3.2%. It is also eligible under GSP, the developing-country programme, which Congress has to renew; check whether GSP is in force on the entry date.
It is the only US line under subheading 4405.00, so the six-digit code used by every Harmonized System country and the eight-digit US line describe the same goods; a foreign tariff or an exporter's invoice showing 4405.00 points straight here.
Census statistics map these goods to NAICS 321999 (All Other Miscellaneous Wood Product Manufacturing), an industry of 2,327 US establishments employing 31,381 people, the industry a domestic producer of these goods reports under.