Threaded Coupling 316 Stainless Steel Trade Size 2 1/2 in Overall Length 3 1/4 in Finish Polished Compatible Conduit Type RMC IMC Thread Type NPS 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 Overall Width 3 5/16 in Weight 1.94 lb Compatible Conduit Trade Size 2 1/2 in Connection Type Threaded Inside Diameter 2.88 in