Insulating Ceramic Filler Bricks from Japan
Low-density ceramic bricks with insulating properties used as fillers in composite building panels. Fired from lightweight clay aggregates at >800°C, classified in HTS 6904.90 as other ceramic support or filler tiles.
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
• Explicitly state non-electrical use to avoid Chapter 85 exclusion
• Thermal conductivity tests aid in proving building insulation intent
• Avoid bulk import with refractories to prevent averaging issues