4418.82.00.00/Fire-Retardant Treated CLT Panels/Japan

Fire-Retardant Treated CLT Panels from Japan

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 — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

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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