Heavyweight Uncoated Kraftliner Paperboard from Mexico
This is uncoated paperboard in rolls, weighing 250 g/m², with over 80% sulfate wood fibers, meeting minimum Mullen bursting strength for kraftliner exceeding 637 kPa at 200 g/m² equivalent. It falls under HTS 4805.93.40 as other uncoated paperboard weighing 225 g/m² or more, not further worked beyond chapter note 3 specs. Primarily used for high-strength packaging and box linings.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Verify fiber composition exceeds 80% sulfate process wood fibers via lab testing to confirm kraftliner status and avoid reclassification
• Provide mill test certificates showing weight ≥225 g/m² and Mullen burst strength to prevent delays at customs
• Ensure product is in rolls or sheets, uncoated, and not printed or further processed per chapter note 3