Alc Series Ball Hanger | Circuit Protection | Control Circuits Lighting Ballasts Meter Circuits Electronic Circuits | Designed to Compensate for Length Changes Due to Temperature Variations in Exposed Conduit Runs | For Adapting Non-Metallic Conduits to Threaded Fittings, Metallic Systems | For Use in Metal Framing Applications | For Use With Sheet Metal | For Use With Threaded Rigid Metal Conduit and Imc | Use Through Knockout to Connect Box to Conduit Coupling, Use With Locknut to Connect Two Boxes Side by SideFurbay Electric Supp