The 20 EX tele stay has variable ventilation positions, making it ideal for the operation of casement and hopper windows.

Application: for outward-opening casement windows, skylights, hopper windows and top-hung windows

• variable ventilation
• does not take up any space inside when opening the window, because of which it can easily be combined with a fly screen, net curtains or window decoration
• once the brake required has been set, this can be maintained for all ventilation positions
• also possible to fit to the top edge of a casement window, because of which space is created on the bottom edge to hang out clothes or bedding, for example
• simple assembly