4802.56 - Weighing 40 g/m² or more but not more than 150 g/m², in sheets with one side not exceeding 435 mm and the other side not exceeding 297 mm in the unfolded state:

This HTS category, 4802.56, specifically covers uncoated paper and paperboard that is not made by mechanical or chemi-mechanical processes, or where such fibers constitute no more than 10% of the total fiber weight. The key defining characteristics for this classification are its weight range, which is 40 g/m² or more but not exceeding 150 g/m², and its dimensions when in sheets. These sheets must have one side that does not exceed 435 mm and the other side that does not exceed 297 mm in their unfolded state, regardless of size. This ensures these are not continuous rolls or exceptionally large sheets falling into other subheadings.

Category 4802.56 is distinguished from its siblings primarily by the form and dimensions of the paper. Unlike 4802.55, which covers paper within the same weight range but specifically in rolls, 4802.56 deals exclusively with sheets. Furthermore, it differs from 4802.54 (less than 40 g/m²) and 4802.58 (more than 150 g/m²) based on its specified weight range. Category 4802.57, also covering paper in the same weight range, is designated for "other" paper and paperboard, implying that 4802.56 is more precisely defined by its sheet dimensions.

Within category 4802.56, further subdivisions exist to refine classification based on the dimensions of the sheets. The subcategories differentiate between sheets where one side exceeds 360 mm and the other side exceeds 150 mm in the unfolded state, and all "other" sheets that meet the criteria of 4802.56. This allows for a more granular classification of paper and paperboard based on the specific cutting and sizing of the sheets.