CONDUIT, PIPE, FITTINGS | Acoustical, Ceiling and Partitioning, Electrical | Designed to Compensate for Length Changes Due to Temperature Variations in Exposed Conduit Runs | For Rigid, Imc and Emt | For Use With Conduit | For Use With Emt Conduit | To Connect Threaded Metal Conduit to a Threadless Opening in a Box or Enclosure | Used With Locknut to Terminate Rigid and Imc Conduit to an Enclosure, Provides a Smooth Pulling Surface