This heading covers wood shaped along its edges or faces but not further worked into finished articles. Once the wood is assembled into a finished product — such as a parquet panel or a picture frame — it typically moves to a different chapter covering articles of wood. The key test is whether the shaping is a profile applied to a length of wood stock versus a completed article.

Continuously shaped bamboo profiles, including tongue-and-groove bamboo flooring blanks, fall under subheading 440921 when they are in the form of profiled lengths rather than finished assembled panels. Finished bamboo flooring assembled into tiles or click-lock panels is generally classified as an article of bamboo in a different heading. The distinction turns on the degree of further manufacture.