Porous Hollow Ceramic Thermal Bricks from Japan
Fired ceramic hollow bricks with engineered porosity for optimal heat insulation in cavity wall systems. Classified HTS 6904.10.00.30 for heat insulating hollow building bricks per official definitions excluding unfired products. Provides breathable moisture control alongside thermal benefits.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Maintain firing temperature records above 800°C threshold to prevent exclusion under chapter note (b)
• Label bricks with technical specs including density and thermal conductivity values
• Coordinate with freight forwarders experienced in ceramic construction goods to avoid breakage claims