Foamglass Ceramic Insulating Brick from Japan
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.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• 1
• Cellular glass certification must confirm ceramic firing process per Chapter 69. 2
• Distinguish from Chapter 70 glass articles via construction end-use. 3
• Solid brick density verification prevents tile misclassification