Window Replacement - looking for source or advice

TyroneandGladys wrote:
?????? check with a fiberglass shop about removing the window and glassing over it?

I really wish you would not have said this. I have a single pane window in the cab over and this was my idea to add to the warmth and to prevent leaks and I had just talked myself out of it...... now I will look more into it :-) I think it is a good idea as really how often do you look out the window when camping plus stops heat in summer and cold in winter.