Conduit Reducer Bushing, Type Threaded, Large End Trade Size 5 Inch, Small End Trade Size 3-1/2 Inch, Enclosure Class I Group C D, Class II Group E F G, Class III, Material Malleable Iron, Approval UL 886, CSA C22.2, Finish Zinc Electroplated/Chromate/Epoxy Powder Coated, Used On Rigid Conduit/IMC