Diatomaceous Earth Ceramic Insulating Brick
Solid fired brick incorporating diatomaceous earth for high-temperature insulation in building envelopes. HTS 6904.10.0010 classification for heat insulating solid ceramic building bricks per fired ceramic definitions.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for boiler/furnace lining applications
Other refractory bricks classify in 6903 when designed for industrial high-heat rather than building insulation.
If imported as raw diatomaceous earth without ceramic processing
Siliceous fossil meals exclude processed ceramic articles; manufacturing stage determines chapter.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• 1
• Laboratory analysis confirming inorganic nonmetallic fired composition required. 2
• Avoid common pitfall of declaring as mineral substances (25). 3
• Thickness documentation critical to exclude tile provisions
Related Products under HTS 6904.10.00.10
Heat Insulating Ceramic Solid Building Brick
A solid ceramic building brick fired after shaping from inorganic nonmetallic materials like clays and lightweight aggregates, designed specifically for heat insulation in construction. It falls under HTS 6904.10.0010 as a solid building brick with thermal insulating properties, meeting Chapter 69 requirements for fired ceramic products not classifiable in headings 6901-6903. Thickness exceeds US note limits for tiles, confirming building brick classification.
Vermiculite Ceramic Insulating Brick
Solid building brick incorporating expanded vermiculite aggregate in a fired clay matrix for superior thermal resistance, used in energy-efficient wall construction. Classified under HTS 6904.10.0010 as heat insulating solid bricks meeting fired ceramic criteria with low thermal conductivity (<0.2 W/mK). Exceeds tile thickness per US notes.
Perlite Aggregate Insulating Ceramic Brick
Fired solid brick containing expanded perlite for lightweight heat insulation, ideal for passive house construction and cavity walls. HTS 6904.10.0010 applies to these solid building bricks with ceramic fired body and thermal insulating properties per Chapter 69 definitions.
Foamglass Ceramic Insulating Brick
Solid brick made from cellular glass (foamglass) fired into durable heat insulating ceramic form for foundation walls and roof insulation. Falls under HTS 6904.10.0010 as solid building bricks meeting fired ceramic requirements with exceptional low thermal conductivity.