DDAC Treated Basswood Structural Timbers from Germany
Basswood timbers treated with didecyldimethylammonium chloride (DDAC) for light structural framing. HTS 4403.12.0060 nonconiferous rough other category. Quaternary ammonium compound effective against fungal decay in humid environments.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• Provide ICC-ES evaluation reports for structural building code acceptance
• Document fastener compatibility with quaternary treatments
• Confirm minimum cross-section for rough timber specifications