Plastic windows in 100x250 with RC2 not possible?

I'm not really familiar with the topic, but does the window manufacturer even have alternatives in the program? And are you already committed to this window manufacturer?

The BU has been working with the window manufacturer for over 10 years and very regularly. He is supposed to deliver reasonable quality at a fair price, and according to the BU, there have been almost consistently very positive experiences so far. I actually wanted to build on that. But in times of higher workload, the window manufacturer obviously has little interest in windows that are outside the norm and require some coordination. Unfortunately.

I would like to know the specific surcharge for the aluminum patio door if RC2 would be possible in those dimensions [...] @11ant: Could you give me a tip on which frame manufacturer is most suitable here due to increased stability? And also about fittings that have a “good reputation” here. Could the external roller shutters be designed differently to relieve the window?

You should not assemble the elements yourself. Choose a supplier whose product convinces as a whole. Do not hesitate to take a different supplier for a single element. Most apartment buildings have PVC windows, and an aluminum front door may come from a different source. I don’t understand what the roller shutters have to do with the question.

Yes, I wouldn't dare to put it together myself. But if you had, for example, said that company XYZ is often used there, I would have passed that on to him as info.

For a standalone front door, I can well imagine using another provider.
Do you think that would also work for a patio door located 1.5m next to the large sliding door of the same terrace? I really have concerns that it might look bad.

Regarding the roller shutters: Since the maximum height of a window including the roller shutter is often specified, I get the impression that the roller shutter plays some role in the load here. Possibly the additional weight. I think I once saw something about an aluminum bar at the top as an option in some online configurator. Hence the idea that in window construction maybe something can be done to "reinforce" the window or the frame to reduce the problem of the additional weight of the roller shutter box.

But if you had said, for example, that company XYZ is often used there, I would have provided him with that as information.

Your supplier (and not me) is responsible for the finished product. If I were to advise him to replace the fittings, I would have to have misunderstood my own Steinemantra ;-(

Do you think that would work for a patio door that is 1.5m next to the large sliding door of the same terrace? I am really worried that it might look bad.

I am more concerned that it might be disturbing that we do not know the house regarding your questions. Such hypothetical crystal ball gazing is not entirely harmless. By the way, I still cannot follow your roller shutter box idea.

Your supplier (and not me) is responsible for the finished product. If I were to advise him to replace the fittings, I would have to have misunderstood my own Steinemantra ;-( I am rather concerned that it might become problematic that we do not know the house in relation to your questions. Such hypothetical crystal ball gazing is not entirely harmless. By the way, I still cannot follow your shutter box thoughts.

I don't quite understand where you would suddenly assume responsibility if you were to name a company from your experiences that has stood out positively to you in this context, but okay. Also, regarding the second point, whether it is common for homeowners to take windows or patio doors that are visually close to each other from different manufacturers or whether one tends to avoid this for aesthetic reasons, I would have somehow hoped for more feedback from you based on your experience.