The german windows are not really "casement" windows - and they do come with screens. One of the window companies I worked for handled a line of those german windows. (and doors) Some, however, are more like doors than windows and are used for emergency egress and do not, generally, have screens.
really how much does it matter? in pittsburgh weather all windows are closed in the winter, and since we have AC most of the summer they are closed too....
If the casements you are looking at doesn't include screens then maybe you should look elsewhere. We have all casements that open out (like a double door), the screens are on the inside and easily removed for cleaning the screens as well as the inside of the windows. Modern casements are every bit as good as double hung and even have optional fold away cranks so they don't interfere with curtains or blinds.
John
replying to John, LolaR wrote: I have a casement windows that I purchased from Heritage Home Design . There are actually a lot of benefits in using casement windows. They can be fully opened compared to other windows like double hung and fixed windows. They have fewer muntins, muntins are strips of wood or metal that divides panes of glass within a single window. Casement windows has an open sash that can funnel the breeze into your house They are very difficult to break into.Casement locks are hook shaped and these hooks are embedded within the frame making them very hard to break into.
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