Fitting floor-to-ceiling double windows inside with blinds, any experience?

oh... I thought you could simply replace blinds with screens. That the blind box has to be broken open and the window removed for that is new to me as well.

I thought you could simply replace roller shutters with screens. That the roller shutter box has to be opened up and the window removed for it is new to me as well.

I had the chance to witness live during construction how different the requirements are. We changed our minds on 3 windows from roller shutters to venetian blinds. The wall structure, where the roller shutter box is usually recessed, is different. The recesses above the windows for the boxes were now bricked up again. The venetian blinds are probably delivered directly by the window manufacturer and installed as a whole? I didn't quite understand exactly either. But you can't just switch them out like that. You either have to want it and happen to have a lot of money, or you do it together with new windows and an accompanying façade renovation.

Roller shutters and blinds are clearly different systems, and the boxes for them are as different as day and night. But with [Screens] and [Rollo], which both roll up onto a roll, I would say that you don’t have to change the box here, so the effort is therefore limited.

Ah, we're talking about those textile curtains on the outside? OK, I have no experience to contribute. I keep getting confused with all the technical terms - especially since they are sometimes used for different things in different parts of Germany.

oh... I thought you could simply replace blinds with screens. That the blind box has to be pried open and the window removed for it is new to me as well.

So according to our window installer, it's a huge operation

How is he ever supposed to get back in there if something is wrong with the winding or the motor? That’s how it should look in 99.99% of houses.