5407.61.99.15 - Weighing more than 170 g/m² (620)

This HTS classification covers woven fabrics specifically constructed from synthetic filament yarn, with a particular focus on those exceeding 170 grams per square meter in weight. The core requirement is that these fabrics must contain at least 85 percent by weight of polyester filaments. Furthermore, these polyester filaments must be non-textured, meaning they retain their inherent smooth, linear structure rather than being processed to create bulk or crimp.

The distinguishing feature of this category, when compared to its sibling "Weighing not more than 170 g/m²," is precisely the fabric's weight. Importers must accurately determine the fabric's weight per unit area to ensure correct classification. This threshold of 170 g/m² is a critical determinant, separating heavier, more robust fabrics from lighter ones.

As this classification represents a leaf node within the HTS structure, there are no further subcategories. Therefore, the classification is finalized at this level based on the fabric's material composition (predominantly non-textured polyester filaments), its woven construction from synthetic filament yarn, and its weight exceeding 170 grams per square meter. Examples might include heavy-duty upholstery fabrics, durable industrial textiles, or certain types of outdoor gear materials that meet all these specific criteria.