6907.23.10.11 - Tiles, the largest surface area of which is capable of being enclosed in a square the side of which is 30 cm or less

This HTS classification covers unglazed ceramic tiles, excluding mosaic cubes and finishing ceramics, where the largest surface area can be enclosed within a 30 cm square. These tiles are intended for use as flags and paving, or as hearth or wall tiles. The key defining characteristic for this category is their water absorption rate, exceeding 10 percent by weight, which indicates a more porous ceramic body.

Within this level, the primary distinction lies between "Other" and the sibling category 6907.23.10.51, which also falls under "Other." The current node, 6907.23.10.11, specifically identifies "Other" unglazed tiles with a water absorption exceeding 10 percent that do not fit into any more specific sub-classifications that might exist at lower levels (though this is a leaf node).

As this is a leaf node in the HTS structure, there are no further subcategories to introduce. Therefore, the classification relies solely on the stated criteria: unglazed, porous ceramic tiles (water absorption > 10%) with a largest surface area capable of being enclosed in a square of 30 cm or less, intended for paving, hearth, or wall applications. Examples might include certain types of quarry tiles or basic ceramic floor tiles designed for areas where high porosity is acceptable or even desired.