4805.92 - Weighing more than 150 g/m² but less than 225 g/m²:

This HTS category, 4805.92, encompasses "other" uncoated paper and paperboard that falls within a specific weight range. Specifically, it covers materials weighing more than 150 grams per square meter (g/m²) but less than 225 grams per square meter (g/m²). This category is reserved for paper and paperboard that does not fit into more specific headings within Chapter 48 and has not undergone further processing beyond what is permitted by Note 3 to Chapter 48, which generally excludes significant mechanical or chemical treatment beyond basic manufacturing processes.

The defining characteristic that distinguishes 4805.92 from its sibling categories is its precise weight range. HTS code 4805.91 covers similar "other" uncoated paper and paperboard that weighs 150 g/m² or less, while 4805.93 applies to materials weighing 225 g/m² or more. Therefore, this specific classification is crucial for accurately categorizing products based solely on their basis weight within this mid-range.

Within 4805.92, two subcategories exist to further refine the classification: "Pressboard" (4805.92.20.00) and "Other" (4805.92.40). The "Pressboard" classification is for specialized paperboard designed for use in pressing operations, often characterized by its density and strength. The "Other" subcategory serves as a residual classification for all other paper and paperboard meeting the weight criteria of 4805.92 but not qualifying as pressboard.