4406

Analysis

Heading 4406 of the Harmonized Tariff Schedule covers railway or tramway sleepers (cross-ties) of wood. It divides into 4 six-digit subheadings and 4 eight-digit tariff lines, with 4 ten-digit statistical suffixes below them.

Every one of its 4 tariff lines is duty-free at the general rate, so classification within the heading affects statistics and Chapter 99 measures rather than the base duty.

The largest subheadings are 4406.11 (unnamed, 1 line), 4406.12 (unnamed, 1 line), 4406.91 (unnamed, 1 line) and 4406.92 (unnamed, 1 line).

Its median rate of duty-free sits at the 30th percentile of the headings in chapter 44.

By Census's concordance, most of its statistical lines are made by Sawmills (321113) and Wood Preservation (321114). Those are the NAICS industries a US producer of these goods would report under.

The heading text decides whether a product belongs here at all (General Rule of Interpretation 1); the subheadings and lines below it only apply once that is settled. Section and chapter notes can override the heading wording, so read them for borderline goods.