Attributes . IEEE 383 (70000 BTU/Hour) Flame Test, ICEA (210000 BTU/Hour) Flame Test, ICEA Method 1, Table E-2, UL Listed 1277 and 83, ASTM B-3, Class B Per ASTM B-8, Class 1 Per Article 725 of the NEC, UL Type TC Per Article 336 NEC . Names