Revisions log for Answer #1873
This is the answer to the question What lets in light better – a double hung window or a window with a central mullion?
Revision 1
The practical consideration of cleaning the fixed glazing cannot be dismissed.
Nevertheless, just as food for thought: we have so many and in the dimensions unusual windows that we (have to) have a company come to clean them. This is not sooo expensive either, if you don't do it monthly. The idea of aligning the beautiful house design with the cleaning possibilities of the windows would not have occurred to me.
BTT: Take the normal windows with center mullions. Are a little more common in manufacture and therefore slightly cheaper if necessary, a little more stable in the frame construction and – as already mentioned above – the wings can be tilted independently.