| Standards/Approvals | NEC: Class I, Div 1 and 2, Groups B, C, D, Class II, Div 1 and 2, Groups E, F, G, Class III|CSA Certified Class I, Div 1 and 2, Groups B, C, D, Class II, Div 1 and 2, Groups E, F, G, Class III|Exd IIB + H2|UL 1598|UL 844|UL E10444|C22.2 No. 250|C22. 2No. 137|CSA 025428 |