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%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
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