Preformed Calcium Silicate Exhaust Duct Insulation from Japan
Molded half-sections for insulating hot gas exhaust ducts in petrochemical plants, leveraging calcium silicate's high-temperature performance. HTS 6806.90.00.20 applies to these sound/heat-insulating molded mineral articles.
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
• Document custom molding dimensions to distinguish from standard boards
• Comply with US fire safety standards (UL listings) for easier entry