TourAxiom/US Federal/Statutes/Hts/§ 7219.21.00HTS 7219.21.00∀4 rulesOfficial sourcegraph ↗build calculator ↗citeOf a thickness exceeding 10 mm Rates of duty (1-General): Free Rates of duty (2): 29%← HTS 7219.14.00.90HTS 7219.21.00.05 →