The solution: In order to make our teeth, we have a Kaercher brought us many years ago WV60 window sucker. A great relief, however: the top of the conservatory to get so not ran.
Are now only encountered that there recently this extension. Ordered tested: Optimal! The sucker WV60 is excellent at the bar and now we come without a ladder up to the conservatory.
Conclusion: Very practical. Buy recommendation.