Rock Wool Acoustical Stage Backdrop Boards from Japan
High-density rock wool boards used behind stages in concert venues to absorb mid-to-high frequency sounds and prevent feedback. They qualify under HTS 6806.90.00.10 as sound-absorbing articles of mineral wools, distinct from mixtures of heading 6811. Custom perforations enhance their acoustical performance.
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 rock wool production process (melt-spun basalt fibers) to differentiate from slag wool; common error is confusing with synthetic fiber panels
• Include NRC and STC test results in documentation for customs valuation; ensure non-combustible certification
• For large panels, verify container loading specs to prevent damage; consider anti-dumping duties if from certain origins