The window in the fackwerk house in your post is oblong rather than square, as the window in 4207 seems to be. I suspect that the 4207 window comes ready fitted and so isn't available separately (it doesn't appear on the 4207 plan on Playmobil.de either).
There used to be a green door for the gable end of the mediaeval house but that was a long time ago.
If you're wanting a window for the gable end of the mediaeval house, I may have one but it will be brown. They are also very difficult to fit as you have to take the gable apart, that's presumably why they seem no longer to be available separately for the new mediaeval houses from DS.
