6907.22.10 - Unglazed

This HTS category, 6907.22.10, specifically covers unglazed ceramic flags, paving, hearth, and wall tiles that have a water absorption coefficient by weight exceeding 0.5 percent but not exceeding 10 percent. These are typically durable ceramic products intended for surfacing floors, walls, or hearths, where a degree of porosity is acceptable and desired for certain applications such as slip resistance or breathability. The "unglazed" characteristic is key, distinguishing these tiles from their glazed counterparts.

The primary distinction of this subcategory lies in its "unglazed" nature, as explicitly stated. Sibling categories within this broader grouping would include glazed ceramic tiles, which possess a smooth, impermeable vitreous coating applied before firing. This unglazed classification emphasizes the raw, fired ceramic body of the tile, without any decorative or protective glassy layer.

Within this unglazed category, further subdivisions exist to refine classification based on the physical dimensions and characteristics of the tiles. The subcategory 6907.22.10.05 addresses tiles with a particularly small surface area, where the largest surface can be enclosed by a square with sides less than 7 cm. This allows for precise classification of mosaic-style tiles or other small format ceramic pieces. The "Other" subcategory would encompass all other unglazed tiles meeting the water absorption criteria that do not fall into the specifically defined smaller dimensions.