Unbleached Kraft Linerboard 300 gsm from Canada
Unbleached kraft paperboard in rolls, weighing 300 g/m², made from at least 80% sulfate process wood fibers, used as the outer liner for corrugated boxes. It meets kraftliner specifications with high Mullen bursting strength suitable for heavy-duty packaging. Classified under 4804.51.00.00 as uncoated kraft paperboard over 225 g/m², unbleached, not qualifying as newprint under 4802/4803.
Duty Rate — Canada → United States
Rate breakdown
Import Tips
• Verify fiber composition exceeds 80% sulfate/soda wood fibers via lab testing to confirm kraft status and avoid reclassification
• Provide mill test certificates showing weight ≥225 g/m² and unbleached status; common pitfall is misdeclaring bleached variants
• Ensure documentation distinguishes from heading 4802/4803 newprint base paper to prevent duty adjustments