Pre-notched Fire-Rated Studs
2x6 Douglas fir lumber studs pre-notched for wiring with intumescent sealant channels for 1-hour fire-rated wall assemblies. The pre-notching and sealant channels qualify as specialized builders' carpentry, placing them under tariff item 4418.99.00 as other joinery of wood.
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% |
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
• Verify that the intumescent sealant is part of the stud's manufacturing and not a separate component
• Provide CBSA with fire-rating certifications to support the specialized classification
• Ensure the Douglas fir species is documented for tariff purposes
Related Products under Tariff item 4418.99.00
Bamboo Interior Screen Dividers
Assembled bamboo pole screen dividers for interior room partitioning. As bamboo is included in the wood definition per Chapter 44 note 6, these qualify as builders' joinery, falling under tariff item 4418.99.00 as other wood carpentry.
Cedar Closet Lining Panels
Aromatic western red cedar panels pre-assembled for closet lining applications in homes. These panels are builders' joinery designed for interior carpentry, classifiable under tariff item 4418.99.00 as other wood carpentry.
Cellular Wood Partition Wall Panels
Lightweight cellular wood core panels assembled for interior office partition walls. These are specifically noted as cellular wood panels in builders' joinery, placing them under tariff item 4418.99.00 as other wood carpentry.
Drilled Metal-Plated Studs
Engineered wood studs with pre-drilled holes and steel reinforcement plates at notches, designed for seismic zone framing. The drilled and notched features qualify as specialized builders' carpentry, falling under tariff item 4418.99.00 as other builders' joinery of wood.
Mahogany Window Beadings Assembled
Pre-assembled mahogany wood beadings and stops for interior window frames in construction. These are builders' joinery components, classifiable under tariff item 4418.99.00 as other wood carpentry.
Maple Kitchen Cabinet Face Frames
Assembled maple wood face frames for modular kitchen cabinets used in residential construction. These are builders' joinery for interior installations, falling under tariff item 4418.99.00 as other wood carpentry.