4805.93 - Weighing 225 g/m² or more:

This HTS category, 4805.93, encompasses "Other uncoated paper and paperboard" that is not further processed beyond the specifications in Note 3 to Chapter 48, and importantly, weighs 225 g/m² or more. This classification is for paper and paperboard products that do not fit into more specific categories within headings 4801 to 4804, and possess a substantial weight per unit area. Examples can include certain types of specialty papers or paperboard intended for a variety of industrial or packaging applications where a greater substance is required.

The key distinguishing factor for 4805.93 is its weight. It is differentiated from its sibling categories by its minimum weight requirement. Specifically, it covers paper and paperboard weighing 225 g/m² or more. This contrasts with 4805.91, which is for lighter materials weighing 150 g/m² or less, and 4805.92, which falls into the intermediate weight range of more than 150 g/m² but less than 225 g/m². Therefore, the physical characteristic of weight is the primary determinant for classification within this group.

Within 4805.93, further subdivisions exist to refine the classification. The category is split into "Pressboard" (4805.93.20.00) and "Other" (4805.93.40). Pressboard is a dense, compressed paperboard often used for electrical insulation or mechanical components. The "Other" subcategory captures any remaining uncoated paper or paperboard weighing 225 g/m² or more that does not meet the specific definition of pressboard, allowing for the accurate classification of a wider range of products within this weight specification.