Straight Insulated Throat Hub, Size: 1 IN, Material: Steel, Finish: Zinc Electroplate, Length: 1.72 IN, Height: 1-1/4 IN, Standard: UL 514B, UL File Number E14814, CSA C22.2 No. 18.3, CSA 065178, NEMA FB-1, UL Listed For Class I, Division