Threaded Coupling 316 Stainless Steel Trade Size 3 1/2 in Overall Length 3 7/16 in Finish Polished Compatible Conduit Type RMC IMC Conduit Fitting Type Coupling Standards ANSI/NFPA 70 NEC UL 6A UL File #E230584 UL/CUL Listed For Use With Threaded Metallic Conduit For Conduit Type RMC IMC Compatible Conduit Trade Size 3 1/2 in Connection Type Threaded