Fss Shallow Depth 1-Gang Cast Device Box | T-Grid Box Hanger | Acoustical, Ceiling and Partitioning, Electrical | Control and Motor | Designed to Compensate for Length Changes Due to Temperature Variations in Exposed Conduit Runs | For Use in Metal Framing Applications | For Use With Sheet Metal | For Use With Threaded Metal Conduit and ImcFurbay Electric Supp