5211.31.00.90 - Plain weave duck (219)

This HTS category, 5211.31.00.90, specifically classifies dyed plain weave fabrics of cotton. These fabrics are characterized by containing less than 85 percent by weight of cotton, with the remainder being primarily man-made fibers. Furthermore, to fall within this category, the fabric must weigh more than 200 grams per square meter, indicating a substantial weight and likely a durable construction. The term "duck" in the description often refers to a strong, plain-weave cotton fabric used for various industrial and heavy-duty applications.

This classification distinguishes itself from its siblings by its specific weave structure and the lack of a specific trade name like poplin or broadcloth. While sibling category 5211.31.00.20 covers poplin or broadcloth, which are also plain weave fabrics, this category is for other types of plain weave fabrics that do not fit those more specific descriptions. The "Sheeting" sibling would likely cover plain weave cotton fabrics intended for bedding, which typically have different weight and weave characteristics.

As this is a leaf node, there are no further subcategories. Therefore, classification under 5211.31.00.90 depends on the precise identification of the fabric's weight, fiber content, weave structure (plain weave), and whether it has been dyed. This category serves as a residual classification for dyed plain weave cotton fabrics meeting the specified weight and fiber composition criteria, but not meeting the descriptions of more narrowly defined sibling categories.