Appleton UNILETS Recessed Head Close-Up Plug, Size: 1 IN, Material: Steel, Finish: Zinc Electroplate, Connection: Tapered MNPT, Standard: UL 886 (1203), UL File Number E10444, CSA C22.2 No. 25 And 30, CSA 065181, UL Listed For Class I, Groups A, B, C, D, Class II, Groups E, F, G, And Class III, For Use With Threaded Rigid Metal Conduit And IMC