Replace curved side windows with straight windows.

This was a cab and chassis which a fiberglass body was added to. The sidewall has a slight curve to it and the window frame has the same curve. I am not sure it can be done but usually in RV's if you think of something it has been done before!

The frameless windows are very pleasing to the eye, but useless for ventilation, also held together with adhesive which eventually fails! I have eternabond on mine so I do not lose the glass until I resolve this.