Fdc Deep Depth 1-Gang Cast Device Box | Designed to Compensate for Length Changes Due to Temperature Variations in Exposed Conduit Runs | For Reducing Conduit Entries to a Smaller Size in Threaded Rigid and Imc Conduit Systems | For Use With Carflex Conduit and Carflex X-Flex Conduit | For Use With Conduit | For Use With Threaded Metal Conduit and Imc | Use Through Knockout to Connect Box to Conduit Coupling, Use With Locknut to Connect Two Boxes Side by SideFurbay Electric Supp