USG Securock Glass Mineral Wool Insulation from Mexico
Fire-resistant glass mineral wool boards for shaft walls and plenums, tested to ASTM E84. Fits HTS 7019.80.10 as qualifying insulation product.
Duty Rate — Mexico → United States
14.9%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Include UL classification numbers for fire-rated assemblies
• Board thickness over 2 inches may trigger structural panel reviews