Fdc Deep Depth 1-Gang Cast Device Box | Designed to Compensate for Length Changes Due to Temperature Variations in Exposed Conduit Runs | For Dead-End Terminations Where Two Devices or Additional Wiring Capacity Is Required | For Through Terminations Where Large Devices or Additional Wiring Capacity Is Required | For Use With Conduit | For Use With Threaded Metal Conduit and ImcFurbay Electric Supp