You could always cut pieces of styrofoam to fit into the window space inside in the winter for extra insulation. Other than drilling holes and making it look like colander, i've got nothin! I'm sorry )O:
We used steel siding on our run we used 1 piece high and wire from there up. In 2 weeks we'll be putting the same steel siding on for the roof. The only way i can figure you could try and find windows for a mobile home. They can be framed out pretty thinly screen or wire them over from the...