Appleton NSB UNF400R-A Conduit Fittings

The Appleton UNF400R-A Straight Union is an aluminum 4-inch trade-size conduit-to-conduit fitting that joins two pieces of threaded rigid conduit (RMC/IMC) by screwing onto each end. It features 4 in FNPT x 4 in FNPT, female-to-female threaded connections (NPT) and a powder-coated finish, with overall length about 3-1/2 in and hub diameter around 6.44 in, weighing roughly 4 lb. This hazardous-location union is UL 886 (UL 1203) and CSA-listed, rated Class I, Division 1 and 2 (Groups A, B, C, D); Class II (E, F, G); and Class III, making it suitable for explosion-proof conduit installations in demanding environments. Manufactured in Mexico by Appleton Electric, the UNF400R-A is designed to connect conduit to conduit while meeting strict safety standards for use in hazardous locations.