Thermal Insulated Cork Wall Liners from Mexico
Thin natural cork liners backed with paper for thermal regulation behind wall finishes in energy-efficient buildings. Covered by HTS 4503.90.40.00 as reinforced wallcoverings of natural cork. The paper allows for stapling or gluing directly to wall studs.
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
• Obtain R-value certifications to support insulation claims without shifting to Chapter 68 building materials
• Ensure 'wallcovering' intent in commercial docs; construction use may trigger different rulings
• Test for mold resistance in humid climates, as CBP may inspect for agricultural risks