70% Alumina Refractory Checker Brick from Canada
Perforated checker bricks with 70% Al2O3 for regenerator chambers in glass furnaces, promoting heat recovery. High-fired ceramic blocks meeting Chapter 69 firing requirements. Under HTS 6902.20.50.20 for high alumina-silica refractory construction goods.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Submit thermal conductivity data to support regenerator end-use and refractory classification
• Certify no organic binders remain post-firing to comply with Chapter 69 note (b)