6907.40.30.00 - The largest surface area of which is less than 38.7 cm2

This HTS classification, 6907.40.30.00, specifically covers glazed ceramic finishing articles where the largest surface area is capable of being enclosed within a square with a side length measuring less than 7 cm. These are typically smaller, decorative or functional ceramic pieces used for finishing surfaces, such as intricate mosaic tiles, small decorative borders, or specialized trim pieces. The key defining characteristic for this subcategory is the precise dimensional constraint on the largest surface area, measured in terms of its enclosure within a small square.

Distinguishing this category from its sibling, 6907.40.40.00 "Other," is crucial. The sibling category would encompass glazed ceramic finishing articles that do not meet the dimensional criteria defined here. Therefore, if a glazed ceramic finishing article's largest surface area can be enclosed in a square with a side less than 7 cm, it falls under 6907.40.30.00. If that same article's largest surface area requires an enclosing square with a side of 7 cm or greater, it would be classified under the "Other" sibling category.

As a leaf node, this classification does not have further subcategories. Therefore, the focus for classification under 6907.40.30.00 rests entirely on the accurate measurement and interpretation of the largest surface area relative to the 7 cm square enclosure, in conjunction with the requirement of being a glazed ceramic finishing article. Practical application involves ensuring the item is indeed a ceramic, glazed, and intended for finishing purposes, and then confirming its largest dimension fits the specified geometric constraint.