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SITCSection 6
U.S. imports of uncoated kraft paper & paperboard, not elsewhere specified, 225 g/m² or over (SITC 64148) totaled $8.8M in April 2026, traded with 17 countries.
Importers of Uncoated Kraft Paper & Paperboard, Not Elsewhere Specified, 225 g/m² or Over paid $264K in duties in April 2026 — an effective duty rate of 11% on $2.4M in dutiable value, based on actual customs collections rather than the published tariff schedule. Uncoated Kraft Paper & Paperboard, Not Elsewhere Specified, 225 g/m² or Over imports of $8.8M in April 2026 ran 27% above the year-to-date monthly average of $6.9M.
Last updated: April 2026 dataAt 225 g/m² and above, uncoated NES kraft paperboard enters territory more commonly associated with rigid packaging substrates — grades in this range are used for solid fiber boxes, heavy-duty industrial wrapping, and as liner board in multi-ply constructions where stiffness and puncture resistance are priorities. The weight threshold places this product at the heavier end of the kraft paper family, and classification here requires clear documentation that the product is not a more specifically described grade such as testliner or fluting. Canada is a significant supplier of heavier kraft paperboard grades to the US market, given its integrated forest-products industry.
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Testliner and other containerboard grades have specific definitions tied to their intended use in corrugated box construction and their recycled-fiber content. Uncoated NES kraft at 225 g/m² or over that is made from virgin kraft pulp and not specifically designed as a corrugated liner would fall under 64148, while recycled-fiber or specifically defined containerboard grades are classified elsewhere. Mill specification sheets and fiber composition data help establish the correct heading.
Heavy uncoated kraft paperboard in this weight range is used for solid fiber shipping containers, heavy industrial wrapping, protective interleaving for metal coils and glass, and as a structural ply in laminated board constructions. Its high basis weight provides the rigidity and burst strength needed for demanding industrial packaging applications.
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Monthly import values over time