Appleton Electric UL15M Rigid Expansion Coupling

Appleton UL15M Rigid Expansion Coupling is a 1-inch trade-size steel expansion device designed to join rigid metal conduit runs, employing a one-piece telescoping design that permits expansion or contraction without disassembly, which helps maintain wiring continuity and reduces installation time. This Appleton component is UL Listed and CSA Certified for use in Hazardous (Classified) Locations and is intended for use with threaded rigid metal conduit and IMC, ensuring ground continuity and reliable performance in demanding environments. In the 1-inch family, typical external dimensions include an outside diameter of about 1.75 inches, a maximum expansion of roughly 0.66 inches, and an overall length at maximum expansion near 3.67 inches, with steel construction designed for durability in conduit installations. Expansion fittings like this are used to absorb thermal movement in runs of rigid conduit and to simplify modifications, with the one-piece design eliminating the need to disassemble conduit during installation or service.