4810.92 - Multi-ply:

This HTS category, 4810.92, covers multi-ply paper and paperboard that are coated on one or both sides with kaolin (China clay) or other inorganic substances. The coating must be applied with or without a binder, and crucially, no other type of coating should be present. This means papers with additional plastic or wax coatings would fall outside this classification. The paper or paperboard may also be surface-colored, decorated, or printed, and it is typically supplied in rolls or rectangular sheets of any size.

Category 4810.92 is distinct from its sibling category, 4810.99, which encompasses "Other" paper and paperboard within the broader scope of 4810.9. While both fall under multi-ply coated papers, 4810.92 specifically addresses those with inorganic coatings *only*, whereas 4810.99 would include multi-ply coated papers that do not meet the specific inorganic coating criteria of 4810.92, or might have other distinguishing characteristics not covered here.

Within this multi-ply, inorganically coated paper and paperboard classification, further subdivisions exist to refine the classification based on dimensions. The subcategories distinguish between material supplied in strips or rolls with a width exceeding 15 cm, or in rectangular sheets where one side exceeds 36 cm and the other exceeds 15 cm when unfolded. This dimensional criteria is important for differentiating between standard paper products and those of a more specialized or industrial nature.