Actually on an awning window I've found 120mm lets in a lot of air. That's all my windows open too in my sunroom and they circulate well.

I think some has put it there so the door wont latch fully and can be pushed open?

Just my experience. On the doors my research showed that sliding doors were too hard to make work effectively. I went for a double French door. I also got 1/2…

Thanks ed. I might get one swapped around to see if there is any change to noise . If not it will help with the solar gain (blocking) in summer.
I…

OK thanks
Thats how its installed ..

That's correct, face 2 or 3 . Its on face 3. But does that really matter if its on 2 or 3?
Should the laminate be inside or outside?

I have just had 6 very large UVPC(4.6x1. windows and one French door installed.
4 large windows face west, French door north, the rest south.
The glass spec…