Fdc Deep Depth 1-Gang Cast Device Box | Control Transformers Solenoids Inductive Loads Lighting Heaters General-Purpose Loads | Designed to Compensate for Length Changes Due to Temperature Variations in Exposed Conduit Runs | Electrical Distribution | For Supplemental Protection of Circuits Where Time-Delay and Blown Fuse Indication Are Required, Such as Solenoid Circuits or Control Circuits | For Use With Threaded Metal Conduit and Imc | Terminating Connector | Use Through Knockout to Connect Box to Conduit Coupling, Use With Locknut to Connect Two Boxes Side by SideFurbay Electric Supp