Diatomaceous Earth Ceramic Insulating Brick from Canada
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.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• 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