Classification turns on the predominant structural material. A seat whose primary frame is wood with incidental cane webbing typically falls under wooden-frame seating. Only when cane, bamboo, osier, or a similar plant material constitutes the essential character of the seat — usually as both the structural and surface element — does it belong in this natural-material category.

Certain wooden and rattan furniture from specific origins has been subject to antidumping and countervailing duty orders. Importers should verify whether any active orders cover the specific material, construction, and country of origin before entry, as misclassification or incorrect origin declarations can trigger significant liability.