Pre-notched Fire-Rated Studs from Canada
2x6 Douglas fir lumber studs pre-notched for wiring with intumescent sealant channels for 1-hour fire-rated wall assemblies. HTS 4418.99.10.00 applies as these are drilled/notched specifically for builders' carpentry in fire-resistant construction. The notches maintain structural integrity while meeting code requirements.
Duty Rate — Canada → United States
10%
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
• Obtain fire-rating test documentation from manufacturer for customs verification
• Ensure kiln-dried certification (KD19) for dimensional stability claims
• Avoid bundling with metal components to prevent set classification issues