Lightweight Concrete Breeze Blocks from Japan
Breeze blocks are lightweight concrete building blocks with voids for ventilation and reduced weight, commonly used in non-load-bearing walls. Classified under HTS 6810.11.00.70 as unreinforced concrete building blocks, distinct from solid bricks. They qualify as 'other' blocks for construction purposes.
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 density and void percentage to confirm lightweight status; avoid claiming as insulated if not certified
• Provide invoices specifying non-reinforced nature; test for compliance with local building codes like IBC standards