Engineered Douglas Fir Roof Trusses
Heavy-duty roof trusses constructed from Douglas fir, featuring finger-jointed chords and webbing for commercial buildings. Classified under HTS 4418.99.91.20 due to their prefabricated assembly as specialized builders' joinery for roof support.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If composed primarily of bamboo or other woody materials
Chapter notes extend 'wood' definition to bamboo, but specific bamboo trusses may have separate stats reporting.
If imported as pre-cut, laminated lumber pieces without assembly
Laminated structural lumber (LSL) components classify under plywood/veneer headings before truss assembly.
If pre-assembled with roofing panels as prefabricated buildings
Complete modular roof sections become prefabricated buildings under Chapter 94.
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Import Tips & Compliance
• Obtain phytosanitary certificates confirming Douglas fir treatment per ISPM 15 for wood packaging materials used in shipping
• Document truss span ratings (e.g
• 40-60 ft) and wind/snow load certifications to distinguish from general carpentry
• Bundle with installation manuals to demonstrate end-use as roof trusses, preventing misclassification as flooring panels
Related Products under HTS 4418.99.91.20
Prefabricated Pine Roof Trusses
Engineered wooden roof trusses made from pine lumber, assembled with metal plate connectors for residential construction. These fall under HTS 4418.99.91.20 as builders' joinery specifically classified as roof trusses, designed for on-site installation to support roofing structures.
Attic Roof Trusses with Floor Joists
Pre-manufactured roof trusses incorporating integrated floor joist systems for habitable attic spaces in homes. These qualify for HTS 4418.99.91.20 as they are purpose-built roof trusses despite additional flooring capability.
Scissor Roof Trusses for Vaulted Ceilings
Specialized scissor-style wooden trusses creating vaulted ceiling profiles for aesthetic residential roofs. HTS 4418.99.91.20 applies as prefabricated roof support joinery with distinctive geometric assembly.
Mono-Pitch Roof Trusses
Single-slope mono-pitch trusses used for shed roofs, carports, and lean-to additions in construction projects. These engineered assemblies fall under HTS 4418.99.91.20 as specialized roof truss joinery.
King Post Roof Trusses
Traditional king post design trusses with central vertical post for shorter residential spans up to 30 feet. Classified in HTS 4418.99.91.20 for their prefabricated wooden construction as builders' roof joinery.
Hip Roof End Trusses
Pre-built end trusses for hip roof configurations, featuring angled top chords for sloped roof ends. HTS 4418.99.91.20 designation reflects their role as integral prefabricated roof truss components.