Staves destined for cooperage — cut and shaped for assembly into casks or barrels — are explicitly included in heading 4416 and fall under subheading 441600. Rough-sawn lumber that has not been worked to cooperage dimensions would instead be classified under the sawn-wood headings. The key distinction is whether the stave has been shaped or worked to a form recognizable as a cooperage component.

Used barrels that are imported for refilling or reuse are generally still classified under 4416, but their condition, cooperage marks, and any prior contents may affect admissibility under FDA or TTB requirements if they previously held food or beverage products. Consult a customs broker and the relevant agency before importing used cooperage.