7019.66.90.21 - Weighing more than 215 grams per square meter, with a filament diameter of 7 to 13 microns (622)

This HTS category, 7019.66.90.21, covers mechanically bonded open-woven glass fiber fabrics that are colored, have a width exceeding 30 cm, and a plain weave. Specifically, these fabrics must weigh more than 215 grams per square meter but less than 250 grams per square meter, and the individual filaments used to create the yarn must measure not more than 136 tex. The defining characteristic for this particular classification is a filament diameter ranging from 7 to 13 microns.

This classification is distinguished from its siblings by its precise weight and filament diameter parameters. Category 7019.66.90.10 covers similar fabrics but with a lower weight specification of 185 grams or less per square meter. Category 7019.66.90.60 serves as a residual category for other colored, mechanically bonded open-woven glass fiber fabrics not meeting the specific criteria of this or the 0.10 category.

As this is a leaf node in the HTS classification system, there are no further subcategories. Classification within this code hinges entirely on meeting the specified technical characteristics, including the weight per square meter, filament diameter, and the fact that the fabric is colored. These fabrics are typically used in various industrial applications where specific filtration, reinforcement, or insulation properties are required.