The parts were delivered well packed, it was more.
The frame profiles and corner joints are made of high quality and fit well. The corner connectors cover the ends of the frame sections. Is not quite straight cut, it can not be seen.
Since our windows are a bit far plastered, all measurements had to be self-determined, on the recommendations in the guidance I can therefore say nothing.
The frame is relatively quick assembled (Hammer needed). The mounting bracket are made of good material, repeated bending back and forth is possible without breaking. In vice coping bending is very simple. Although they are very narrow, they keep the insect window fixed in the window frame.
However, the onset of the network is a drudgery. A suitable piece of wood (small wooden spirit level) is recommended.
Really important is not to tighten the net at the onset is. Otherwise disfiguration of the frame.
I did not cut off the power to the fixing band but let it survive to the outer edge of the frame. So there will be a still better seal.
This product can only recommend a bit of manual skills and logical thinking is required. The video from the manufacturer is useful.