Potentially. The scope of softwood lumber trade remedy orders has historically been subject to scope rulings, and certain engineered wood panels may be examined for inclusion depending on their wood species composition and manufacturing process. Importers of Canadian OSB should seek a scope ruling from the Department of Commerce or consult a licensed customs broker if there is any uncertainty about whether a specific product is covered.

Both OSB and waferboard are classified under heading 441012, but they differ structurally: OSB uses oriented, layered strands for directional strength, while waferboard uses randomly arranged flat wood wafers. For US tariff purposes, both fall within the same two 10-digit lines (4410120010 and 4410120020), with the distinction between lines based on the degree of further working or surface treatment rather than the OSB-versus-waferboard distinction.