Borate-Treated Walnut Cribbing Timbers from United States
Rough walnut timbers diffusion-treated with borates for temporary mine shaft cribbing and construction shoring. These non-coniferous timbers provide insect resistance without pressure treatment, classified under tariff item 4403.12.00 as other preserved rough wood.
Duty Rate — United States → Canada
0%
Import Tips
• Verify that borate treatment complies with Canadian regulations
• Ensure the timbers are classified as non-coniferous rough wood
• Have treatment records available for CBSA