4040SE-LONG 24V 689 LCN Door Closer Long Arm Track Door Closer, 24V, Aluminum

The 4040SE Sentronic is a heavy duty, non-handed, non-sized closer/holder designed to provide single point hold open for fire and smoke barrier doors. The door is held open until current interruption releases the holding mechanism and closes the door. The single lever track arm is designed for interior doors.