UNILETS Front Cover, Number Of Poles: 1, Material: Malleable Iron, Standard: Class I, Division 1, Groups C, D, Class I, Division 2, Group B, C, D, Class II, Division 1 And 2, Groups E, F, G, Class III, UL 894, UL 1203, UL E10523, E81751, NEMA 3, 7CD, 9EFG, For Factory Sealed Front Operated Tumbler Switches