6904.10.00.10 - Heat insulating

This HTS classification, 6904.10.00.10, specifically designates building bricks that possess heat-insulating properties. These are ceramic units primarily intended for construction purposes, designed to minimize heat transfer. Examples include bricks with internal air pockets, vermiculite, or other insulating materials incorporated into their ceramic matrix, differentiating them from standard building bricks.

This category is distinct from its sibling, 6904.10.00.20, which covers "Other" solid building bricks. While both fall under the broader description of "Solid bricks," this specific subheading requires the demonstrable presence of heat-insulating characteristics as a primary functional attribute, beyond the inherent thermal mass of a solid ceramic brick. The classification hinges on whether the brick's design and composition are specifically engineered to enhance thermal resistance.

As this is a leaf node within the HTS structure, there are no further subcategories. Therefore, classification under 6904.10.00.10 relies on the explicit identification of heat-insulating properties, typically confirmed by product specifications, manufacturer's declarations, or relevant testing standards demonstrating superior thermal performance compared to conventional building bricks.