Molded Calcium Silicate Fireproof Board Panels from Mexico
Fire-rated panels molded from calcium silicate for use in building partitions and protective enclosures in industrial settings. HTS 6806.90.00.20 covers these as sound/heat-insulating articles, distinct from ceramic or asbestos products.
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 fire test certifications (e.g
• ASTM E84) to substantiate insulating properties during customs review
• Label clearly as 'molded calcium silicate' to prevent confusion with gypsum boards in other chapters