Straight Insulated Throat Hub With Bonding Screw, Size: 2-1/2 IN, Material: Malleable Iron, Finish: Triple-Coat (Zinc Electroplate, Chromate And Epoxy Powder Coat), Height: 3.63 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 2, For Use To Connect Rigid Metal Conduit Or IMC To A Threadless Opening In An Enclosure