Basalt Fiber Rock Wool Roofing Board from Japan
Rigid roofing insulation boards made from melted basalt rock fibers. Classified under HTS 6806.90.00 as other mineral wool insulating 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
• Confirm basalt (not asbestos) origin with geological assay reports
• UL fire rating documentation prevents refractory misclassification