5309.21.20.00 - Containing more than 17 percent by weight of wool or fine animal hair (410)

This HTS category, 5309.21.20.00, specifically classifies woven fabrics of flax that contain more than 17 percent but not more than 85 percent by weight of wool or fine animal hair. The primary characteristic distinguishing these fabrics is the significant presence of flax alongside a notable proportion of wool or fine animal hair, exceeding a threshold but not dominating the composition. These fabrics are further categorized by their processing state, being either unbleached or bleached.

This classification differentiates itself from other woven fabrics of flax based on the weight percentage of wool or fine animal hair. For instance, fabrics with a lower percentage of wool or fine animal hair would fall under different subheadings within the 5309 chapter, as would fabrics where flax is the overwhelmingly dominant fiber. The "Other" sibling category at this level would likely encompass woven flax fabrics with a different specific fiber composition or processing treatment not covered by this particular subheading.

As a leaf node within the HTS structure, there are no further subdivisions under 5309.21.20.00. Therefore, the classification is final at this point, relying on the precise weight percentages of flax and wool/fine animal hair, along with the unbleached or bleached status, to accurately categorize the imported or exported goods. Examples of such fabrics could include certain blends used for apparel, upholstery, or decorative textiles where the properties of both flax and wool are desired.