Product details:

Bridgeport Mighty-Move Expansion coupling offers enhanced protection to the conduit wiring systems from damage due to movements. It features steel construction to offer enhanced durability. Expansion coupling is an ideal choice to compensate plus or minus 2-Inch lateral movements of conduit in dry locations. The 4-Inch coupling has an elegant zinc plating to offer enhanced durability and corrosion resistance. Expansion coupling has low profile design for sealing joints in height restrictions areas. It has EMT/RIGID/IMC set screws to offer easy and convenient installation. Coupling is ideally designed for EMT conduits. Expansion coupling is UL listed.