Concrete Hollow Building Blocks from Canada
These are precast hollow blocks made from Portland cement, aggregates, and water, used primarily for constructing walls in residential and commercial buildings. They fall under HTS 6810.11.00 as building blocks of concrete, designed for load-bearing and non-load-bearing masonry applications.
Duty Rate — Canada → United States
13.2%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Verify compressive strength certifications to meet building codes like ASTM C90 for hollow concrete blocks
• Ensure documentation includes material composition to avoid misclassification as artificial stone products
• Inspect for reinforcement; unreinforced blocks stay in 6810.11.00, but reinforced may shift to other subheadings