Exposure-1 Rated OSB Sheathing from Mexico
Oriented strand board rated Exposure-1 for limited water exposure during construction, sanded surface, typically 7/16-inch for sheathing. HTS 4410.12.0010 covers this sanded wood OSB bound with resins, suitable for siding and structural panels. Wax overlay provides temporary protection.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Document Exposure-1 rating with test data showing ≤10% thickness swell after water exposure
• Ensure resin type (PF or UF) declared for TSCA compliance
• Label panels clearly with grade stamps visible for customs inspection