ED STD 3 Hinged Landing Door Damper
In hinged landing doors of Otis and Stahl/Thyssen make a damper is used to dampen the door before the closed position. Often it is called “submarine”.
For replacement purposes DICTATOR supplies different versions of the ED STD3 landing door damper.
Landing Door Damper ED STD3
For hinged lift doors of the makes Thyssen/Stahl and Otis