Those only open via vasistas, you can’t swing around a 4m window lol.

Yeah. Didn’t think too hard about it, just threw something where tilt and turn wouldn’t work. It late over here 😅. still. I’ve made some doors that were too heavy For the tilt and turn hinges we normally use. Mostly due to weird glass pane requirements and sizes.

Mine are aluminum frame, steel reinforcements, PVC is only the external layer:

That’s similar to what’s used over here. But iirc the aluminium is not in the ones I’ve seen only PVC and steel Reinforcements. Could be wrong though. I’m quite sure is the same company though. That profile looks very similar.