Checker Refractory Brick from Mexico
Honeycomb-structured bricks with >50% alumina-silica composition, fired for heat recuperators in glass furnaces. Enables efficient heat recovery through alternating passageways. 6902.20.50 classification for these specialized refractory bricks.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Supply airflow/heat transfer specs to validate refractory checker design
• Avoid packing damage that could alter honeycomb structure during transit
• Certify firing exceeded 1400°C for alumina-silica matrix integrity