American National Standard Institute (ANSI) ANSI 156.4 ARTESSI 156.4 Ciclo-test-testwithout Función de búfer de 1-2,000,000Grade 2-1,000,000Grade 3-500,000Buffer Función de función 1-1,500,000Grade 2-750,000Grade 2-750,000Grade 3-500,000Grade 3-500,000Fire TestPass UL 10 C 3 horas de abeto