Foamglass Ceramic Insulating Brick
A solid brick made from cellular glass (foamglass) that is fired into a durable, heat-insulating ceramic form for foundation walls and roof insulation. The product is shaped and fired, meeting the ceramic definition in Chapter 69. It is classified under tariff item 6904.10.00 as a building brick.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | 3% | — | 3% |
| 🇲🇽Mexico | 3% | — | 3% |
| 🇺🇸United States | 3% | — | 3% |
| 🇩🇪Germany | 3% | — | 3% |
| 🇯🇵Japan | 3% | — | 3% |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the product is primarily glass and not fired as a ceramic
Glassware is classified in Chapter 70, and foamglass may be considered a glass product rather than a ceramic.
If the product is not fired but rather a mineral-based insulation material
Articles of stone or other mineral substances not elsewhere specified may fall under heading 6815.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Verify that the foamglass bricks are fired after shaping and not merely cured, as Chapter 69 excludes articles heated below 800°C
• Confirm the product is not classified as glass under Chapter 70, which may have different duty rates
• Include a detailed product description on the commercial invoice to support classification
Related Products under Tariff item 6904.10.00
Diatomaceous Earth Ceramic Insulating Brick
A solid fired brick incorporating diatomaceous earth, a siliceous material, to provide high-temperature insulation in building envelopes. It is shaped and fired after shaping, meeting the Chapter 69 definition of ceramic products. It is classified under tariff item 6904.10.00 as a building brick.
Energy-Saving Hollow Heat Insulation Bricks
Hollow ceramic bricks specifically formulated for heat insulation, fired to create a porous structure for superior thermal performance in buildings. The internal voids and porous body enhance insulation, and the product is fired after shaping. It is classified under tariff item 6904.10.00 as a building brick.
Engineering Face Bricks
Dense, fired clay face bricks designed for visible exterior walls, offering superior weathering resistance in harsh climates. These building bricks are shaped and fired above 800°C, meeting the Chapter 69 definition of fired ceramic products. Their primary use in construction as building bricks places them under tariff item 6904.10.00.
Engineering Hollow Ceramic Bricks Class SX
Class SX engineering hollow ceramic bricks for severe weather exposure, high-fired clay construction units. The bricks are fired at high temperatures to achieve durability and weather resistance. They are classified under tariff item 6904.10.00 as building bricks.
Heat Insulating Ceramic Hollow Building Bricks
Hollow ceramic bricks fired from clay and designed with internal voids to provide superior thermal insulation in building walls. The product is shaped and fired, meeting the ceramic definition in Chapter 69. It is classified under tariff item 6904.10.00 as a building brick.
Heat Insulating Ceramic Solid Building Brick
A solid ceramic building brick fired after shaping from inorganic non-metallic materials such as clays and lightweight aggregates, designed for heat insulation in construction. The firing process exceeds 800°C, meeting Chapter 69 requirements. It is classified under tariff item 6904.10.00 as a building brick.