Structural Composite Lumber (SCL)
Structural composite lumber (SCL) is a generic category encompassing engineered wood products like LVL, PSL, and LSL, made from wood fibers or strands bonded with adhesives to form dimensional lumber substitutes. It is used for framing, beams, and headers. SCL products are classified under this tariff item as 'other' engineered structural timber products.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | 3% | — | 3% |
| 🇲🇽Mexico | 3% | — | 3% |
| 🇺🇸United States | 3% | — | 3% |
| 🇩🇪Germany | 3% | — | 3% |
| 🇯🇵Japan | 3% | — | 3% |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the SCL is veneer-based like LVL
Veneer-based products may fall under heading 4412.
If the SCL is strand-based like OSB
Strand-based boards are classified under heading 4410.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Specify the exact SCL type (LVL, PSL, LSL) on customs documents to avoid misclassification
• Provide manufacturing details, including strand or veneer orientation and adhesive type
• Verify that the product meets Canadian structural standards and is certified for construction use
Related Products under Tariff item 4418.89.00
Cross-Laminated Timber (CLT) Panels
Cross-laminated timber (CLT) panels are mass timber panels made by stacking and gluing layers of solid-sawn lumber at right angles, creating a strong, dimensionally stable product for walls, floors, and roofs. They are classified under this tariff item as 'other' builders' joinery and carpentry of wood, as they are assembled engineered wood panels not elsewhere specified. CLT panels are increasingly used in mid-rise and tall wood construction projects.
Engineered Wood Trusses
Engineered wood trusses are pre-assembled structural frameworks made from dimension lumber or engineered wood members, connected with metal plates or gussets. They are used for roof and floor support in residential and commercial buildings. These assembled carpentry products are classified under this tariff item as 'other' builders' joinery of wood.
Glulam Beams
Glulam beams are engineered structural members made by bonding layers of dimension lumber with moisture-resistant adhesives, creating large beams, columns, and arches. They are used in roofs, bridges, and heavy timber frames. As assembled engineered wood products, they are classified under this tariff item for 'other' builders' joinery and carpentry of wood.
I-Joists (Engineered Wood)
I-joists are prefabricated engineered wood beams consisting of solid or laminated wood flanges connected by an oriented strand board (OSB) web, forming an 'I' cross-section. They are used as floor and roof joists in residential and light commercial construction. As assembled structural carpentry products, they fall under this tariff item for 'other' builders' joinery and carpentry of wood.
Laminated Strand Lumber (LSL)
Laminated strand lumber (LSL) is an engineered wood product made from aspen or other wood strands oriented and bonded with adhesives into large billets, then cut into studs, rim boards, and other framing members. It is used as a structural substitute for solid lumber in residential and commercial construction. LSL falls under this tariff item as 'other' engineered structural timber products.
Laminated Veneer Lumber (LVL)
Laminated veneer lumber (LVL) is an engineered wood product made by layering thin wood veneers with adhesives under heat and pressure, forming strong beams, headers, and rim boards. It is widely used in residential and commercial framing. LVL is classified under this tariff item as 'other' engineered structural timber products in builders' joinery.