Insulated Concrete Form (ICF) Blocks from Japan
ICF blocks combine expanded polystyrene cores with concrete-receiving shells, poured on-site for walls. HTS 6810.11.00 if imported as preformed concrete building blocks.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Declare as 'concrete blocks with foam inserts' and specify pourable design
• Ensure structural integrity tests for customs acceptance