4407.97.00 - Of poplar and aspen (Populus spp.)

This HTS classification covers wood that has been sawn or chipped lengthwise, sliced, or peeled, and is thicker than 6 millimeters. While it may have undergone further processing such as planing, sanding, or end-jointing, the primary characteristic is its form as lumber. This category specifically pertains to wood derived from poplar and aspen species (collectively referred to as *Populus* spp.).

Distinguishing this category from its siblings, such as oak, beech, or maple, relies on the botanical origin of the timber. While all are sawn or processed lumber exceeding 6 mm in thickness, the specific wood species is the determining factor for classification. For instance, lumber from oak (*Quercus* spp.) falls under 4407.91, whereas this classification is reserved for timber originating from poplar and aspen.

The subcategories within 4407.97.00 provide further granularity for classification based on specific species within the poplar and aspen group. The code 4407.97.00.72 is designated for Yellow poplar (*Liriodendron tulipifera*), a distinct species often grouped with poplars but botanically separate. The remaining subcategory, 4407.97.00.79, encompasses other types of poplar, aspen, and cottonwood, allowing for a more precise identification of the lumber's origin and aiding in accurate tariff application.