Standard International Trade Classification
U.S. imports of Uncoated Paper & Paperboard (Over 10% Mechanical Fiber) in Rolls or Sheets (SITC 64129) totaled $59.5M in September 2026, imported from 27 countries.
Importers of Uncoated Paper & Paperboard (Over 10% Mechanical Fiber) in Rolls or Sheets paid $464K in duties in September 2026, an average duty rate of 0.78% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: September 2026 dataPapers and paperboards in this heading are distinguished by a mechanical-fiber content exceeding 10% of total fiber weight — a composition that typically results in lower brightness, reduced permanence, and higher opacity compared with fully chemical-pulp grades, making them well-suited for newsprint-adjacent applications, directory paper, and certain packaging substrates. The mechanical-fiber threshold is the single most important classification variable separating this heading from the lower-mechanical-fiber printing-paper category, and it must be substantiated by mill documentation at entry. Importers should note that groundwood-containing papers are subject to yellowing over time, a characteristic that end-users in archival or long-shelf-life applications must account for in product specifications.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
2.6K import shipments a month
Directory paper, free-sheet alternatives for short-life publications, certain catalog and insert papers, and some lightweight packaging substrates commonly use mechanical-fiber-containing grades. The higher mechanical content reduces raw material cost but limits brightness and long-term stability, so these papers are generally not suitable for archival, fine-art, or premium printing applications.
When fiber content is close to the 10% boundary, importers should request a detailed fiber-analysis report from the mill and consider commissioning an independent laboratory test. If the result is ambiguous, a binding ruling request to US Customs and Border Protection before importation is the most reliable way to confirm the correct heading and avoid post-entry reclassification and duty liability.
Basic heading 99 of 766 in section 6
Basic heading 64129 · $59.5M of $27.0B
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ImportsExports
Imports
$59.5MYoY · free account
Exports
$3.0MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to September 2026, the U.S. imported $663.7M of Uncoated Paper & Paperboard (Over 10% Mechanical Fiber) in Rolls or Sheets and exported $42.2M.
Through September 2026. Source: U.S. Census Bureau.
Imports · September 2026
origin
Canada and Mexico together supply 93% of it. Sweden pays 10.0% duty; Mexico 0.0%.
customs district
Census does not publish district detail for this classification system.
destination
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.