Just bought the official Renault Windows, but as you know there is a gap at the front where cold air can rush in.
Had a little thought about the problem and come up with an idea.
I don’t think that you can have anything solidly mounted because I believe the door will hit it when opening and closing.
So I have thought about mounting some door draft excluder with the brushes to the plastic side deflectors.
I plan on attaching it to some small plastic angles and then fixing it to the deflectors with double sided sticky pads.
Need to get a few more pieces together before I can test my theory, but I am hoping it will work!
Will post some pictures once its fitted