Grounding Style 1 Receptacle | 2.86 in Length X 0.87 in Width X 1.5 in Height, 3/8 in Dia Hole, for Emt | For Reverse Service (Generator Applications); Grounding Style: Shell Only; Designed to Supply Power to Portable or Fixed Electrical Equipment Such as Motor Generator Units, Welders, Pumps, Compressors, Cellular Relay Stations and Similar Apparatus; Ideal f | Use Through Knockout to Connect Box to Conduit Coupling; Use With a Locknut to Connect Two Boxes Side by Side or Back to Back; Use With a Locknut to Connect Fixture Housings in Continuous Runs; Rigid Conduit Threads (Nps)Furbay Electric Supp