Fire-Retardant Treated CLT Panels from Canada
Cross-laminated timber panels pressure-impregnated with fire retardant for exposed interior applications. Still classified under HTS 4418.82.00.00 as CLT, with treatment noted separately.
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
• Provide UL or Intertek fire test reports showing Class A or B flame spread rating
• Document treatment process to distinguish from creosote/CCA treated lumber
• Maintain treatment warranty certificates from chemical manufacturer