7019.72 - Other closed fabrics:

This HTS category, 7019.72, encompasses other closed fabrics made from glass fibers, including glass wool. These fabrics are characterized by their construction where the warp and weft yarns are interwoven in a manner that creates a continuous, non-porous surface. Unlike veils, which are exceptionally thin sheets of glass fibers, these closed fabrics possess a more robust and structured weave. The category specifically excludes open fabrics, which have a more discernible spacing between yarns.

The distinction between closed and open fabrics is critical for correct classification under 7019.7. Closed fabrics, as defined here, are typically more dense and less permeable than their open counterparts. This characteristic often dictates their end-use applications in insulation, filtration, or reinforcement where a barrier or structural integrity is paramount.

Within this category, further subdivisions exist to refine the classification based on dimensions. Subcategories include fabrics with a width not exceeding 30 cm, and a broader "other" category for fabrics of greater width. This granular approach allows for precise identification based on the physical dimensions of the woven glass fiber material.