Crouse-Hinds Explosion-proof union of trade size 1-1/2-inches, is suitable for use with threaded thickwall conduit systems. Union with male connection, is useful to connect conduit to a conduit fitting. It features feraloy iron alloy construction and has electro-galvanized/aluminum acrylic paint finish. It measures 4-1/4-Inch x 3-1/16-Inch Dia. Union is UL listed, CSA certified and meets NEC/CEC standards.