Insulated Concrete Form (ICF) Blocks from Canada
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 — Canada → United States
13.2%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Declare as 'concrete blocks with foam inserts' and specify pourable design
• Ensure structural integrity tests for customs acceptance