7019.69.40.21 - Weighing more than 215 grams per square meter, with a filament diameter of 7 to 13 microns (622)

This HTS category, 7019.69.40.21, specifically classifies mechanically bonded fabrics of glass fibers that are not colored, and that weigh more than 215 grams per square meter with a filament diameter between 7 and 13 microns. These characteristics are crucial for distinguishing them from other mechanically bonded glass fiber fabrics at this level. The "(622)" notation often refers to specific legal notes or explanatory information within the HTS that further refine the scope of this classification.

To differentiate, sibling category 7019.69.40.10 covers mechanically bonded glass fiber fabrics that weigh 185 grams or less per square meter, whereas this category pertains to those with a significantly higher weight per square meter. Category 7019.69.40.96 encompasses all other mechanically bonded, non-colored glass fiber fabrics not specifically detailed, highlighting the specificity required for accurate classification within this group.

As this is a leaf node, there are no further subcategories. Classification under 7019.69.40.21 is determined by the precise weight per square meter exceeding 215 grams and the filament diameter falling within the specified 7 to 13 micron range, in addition to being mechanically bonded and uncolored. This level of detail ensures that the unique physical properties of these glass fiber fabrics are appropriately accounted for in trade documentation.