Suitable for bottom hinged, top hinged and centre hinged windows.

Provided with quick release connector for an easy window cleaning.

The window opening stroke cannot exceed 1/3 of the window height. The chain stroke can be adjusted acting on the lock spring.

The installation must be carried out in order to allow the cable working in pull action during the load operation (ex. in closing phase for bottom hinged windows and the opening phase for top hinged windows).

In installations with two or more windows placed side by side, rotary junction boxes mechanism are not required.

On windows wider than 1,5 m or anyway with a large area, for better stability to wind, it is suggested to install two or more chain openers.