Safety clamping rod with universal adapter for surface-mounted windows.
The V4A (hardened steel) clamping rod is clamped between the handle and the vertical window bar. Prevents the window from being forced open from the outside. The safety catch can be removed with just one pull and the window can be used as usual. You can still use the blackout blind and the fly screen without restriction.
To determine the length of the safety clamping rod, you need the distance between the fixed pane and the window handle.