Ribbed Smoked Sheets (RSS4) from Canada
Lower-grade RSS4 smoked sheets with higher ash content (max 1.0%) and visible bark specks, used in lower-end rubber products. Classified in HTS 4001.21.00 as it meets 'smoked sheets' definition without prohibited additives.
Duty Rate — Canada → United States
0%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Test for copper/heavy metals pre-shipment; RSS4 tolerances higher but still regulated
• Document smoke-drying process to distinguish from chemically coagulated alternatives