Straight Insulated Throat Hub, Size: 1-1/2 IN, Material: Malleable Iron, Finish: Triple-Coat (Zinc Electroplate, Chromate And Epoxy Powder Coat), Standard: UL 514B, UL File Number E14814, CSA C22.2 No. 18.3, CSA 065178, NEMA FB-1, UL List