Fsct Shallow Depth 1-Gang Cast Device Box | Control Circuits Lighting Ballasts Meter Circuits Electronic Circuits | Control Transformers Solenoids Inductive Loads Lighting Heaters General-Purpose Loads | Designed to Compensate for Length Changes Due to Temperature Variations in Exposed Conduit Runs | For Use With Sheet Metal | For Use With Threaded Metal Conduit and Imc | Installed in a Conduit Run, Compemsates for Temperature Changes | Lighting Loads/ Branch Circuit Loads