4805.93.40 - Other

This HTS classification, 4805.93.40, encompasses "Other" paper and paperboard that is uncoated, supplied in rolls or sheets, and has undergone no further processing beyond what is outlined in Note 3 of Chapter 48. Specifically, it pertains to such materials weighing 225 g/m² or more, which do not fit into more specific subheadings within the 4805.93 category. This means it serves as a residual category for heavy, uncoated paper and paperboard not otherwise specified.

Distinguishing this category from its sibling, 4805.93.20 (Pressboard), is crucial. While both fall under the umbrella of uncoated paper and paperboard weighing 225 g/m² or more, pressboard is characterized by its specific composition and manufacturing process, often involving high pressure to create a dense, multi-layered material. Classification under 4805.93.40 would apply to other types of heavy uncoated paper and paperboard that do not meet the technical requirements or common understanding of pressboard.

The subcategories within 4805.93.40 further delineate the types of paper and paperboard that fall under this broader heading. These subdivisions are based on the intended end-use or specific material composition, such as folding carton board, wet machine board, construction paper, linerboard with specific pulp content, and tube and core board. The existence of these subcategories allows for more precise classification based on the product's function and manufacturing characteristics, while the residual "Other" subheading remains for any qualifying paper or paperboard not specifically identified in these more granular categories.