Use the Bridgeport 268-DC 3-1/2" EMT Or Rigid Zinc Screw-on Compression Coupling to connect two lengths of EMT or rigid conduit. The die-cast zinc body provides corrosion resistance for long-term use. A concrete tight seal prevents the entrance of concrete aggregate into the raceway. Operators can use the screw-on compression fitting to ensure that the connection between two lengths of EMT conduit stays in place. This EMT coupling meets Nema Standard: FB-1 and UL Standard: UL-514B and can also be used with aluminum EMT.