4403.21.01.20 - Southern yellow pine (Loblolly pine (Pinus taeda)), long leaf pine (Pinus palustris), pitch pine (Pinus rigida), short leaf pine (Pinus echinata), slash pine (Pinus elliottii) and Virginia pine (Pinus virginiana)

This HTS classification, 4403.21.01.20, specifically covers rough wood, whether or not the bark or sapwood has been removed, or is roughly squared, belonging to the pine species *Pinus taeda* (Loblolly pine), *Pinus palustris* (long leaf pine), *Pinus rigida* (pitch pine), *Pinus echinata* (short leaf pine), *Pinus elliottii* (slash pine), and *Pinus virginiana* (Virginia pine). These are coniferous woods, where the smallest cross-sectional dimension of the piece is 15 cm or greater, and are in the form of logs and timber.

This category is distinguished from its siblings by the specific species of pine included. While 4403.21.01.25 covers Ponderosa pine (*Pinus ponderosa*), this classification is for a distinct set of southern yellow pines and other named pine species. The "Other" sibling category at this level would encompass any coniferous pine species that do not fall under the specifically enumerated subheadings for Ponderosa pine or the southern yellow pines listed here.

As this classification represents a leaf node within the HTS structure, there are no further subcategories. This means that once the wood meets all the criteria – being rough pine timber with a smallest cross-sectional dimension of 15 cm or more, and belonging to one of the specified species – it is definitively classified under 4403.21.01.20. This level of specificity ensures accurate duty assessment and trade statistics for these particular types of coniferous logs and timber.