Fdc Deep Depth 1-Gang Cast Device Box | Control Circuits Lighting General Loads | Control Circuits Lighting Ballasts Meter Circuits Electronic Circuits | For Supplemental Protection of Circuits Where Time-Delay and Blown Fuse Indication Are Required, Such as Solenoid Circuits or Control Circuits | For Through Terminations Where Two Devices or Additional Wiring Capacity Is Required | For Use in Metal Framing Applications | For Use With Threaded Metal Conduit and ImcFurbay Electric Supp