DDAC Treated Basswood Structural Timbers
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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If Laminated panel products from tropical hardwoods use specific 4412 subheadings.
If fiberboard over 0.8g/cm³ density
High-density fiberboard structural products classify under 4418.
If prefabricated building sections
Prefabricated wood buildings including treated framing use Chapter 94.
Not sure which classification is right?
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Import Tips & Compliance
• Provide ICC-ES evaluation reports for structural building code acceptance
• Document fastener compatibility with quaternary treatments
• Confirm minimum cross-section for rough timber specifications
Related Products under HTS 4403.12.00.60
Creosote-Treated Oak Logs
Rough-cut oak logs treated with creosote preservative to protect against rot and insects, retaining bark in some areas for natural appearance. Classified under HTS 4403.12.0060 as nonconiferous wood in the rough, specifically 'other' category, treated with preservatives but not stripped or squared. Used primarily for outdoor fencing and railway sleepers.
Pressure-Treated Poplar Utility Poles
Roughly squared poplar poles treated under pressure with wood preservatives for utility line support, minimally processed from the log. Falls under HTS 4403.12.0060 as nonconiferous 'other' wood in the rough with preservative treatment. Ideal for rural electrification projects requiring durable, untreated-looking poles.
Stain-Treated Ash Fence Rails
Ash wood rails in rough form, surface-stained with penetrating preservatives for outdoor fencing, not fully stripped or squared. HTS 4403.12.0060 covers this nonconiferous treated rough wood in the 'other' category. Provides natural aesthetic with enhanced weather resistance for ranch and garden applications.
Creosote-Dipped Elm Guardrail Posts
Elm wood posts dipped in creosote preservative, left in rough state for highway guardrails and bridge supports. Classified HTS 4403.12.0060 as nonconiferous other rough wood treated with preservatives. Meets DOT specifications for impact-resistant roadside safety applications.
CCA-Treated Maple Landscape Timbers
Rough maple timbers pressure-treated with chromated copper arsenate (CCA) for garden edging and retaining walls. HTS 4403.12.0060 applies to these nonconiferous preserved rough wood products in other forms. Long-lasting alternative to concrete for residential landscaping projects.
Pentachlorophenol Treated Hickory Pilings
Hickory wood pilings treated with pentachlorophenol for marine dock construction, maintained in rough log form. Under HTS 4403.12.0060 as nonconiferous other rough wood with preservatives. High strength-to-weight ratio ideal for waterfront structural support.