I am looking for a stylish truck cap with no windows or glass in it to put on my tow rig for the winter. I have seen a few around but it seems like every manufacturer that I check with only builds them with windows

Take a look here:
http://www.4are.com/product/

A couple of the caps they make are available without windows. Years ago, I used to have a Snugtop with no windows, but I didn't see it anymore on their site. You may want to call them too, just to see if they still make windowless versions.

I ordered my Leer cap with no windows. Just custom order it. They make it out of fiberglass with no windows and then they cut them in. It costs less without windows.

so thats how they do it, Hmmmm
just joking Ron,
you going to orange beach??

Yup just like Ron said...i ordered mine without windows after a 20min argument with the sales guy. He kept telling me they only make then with windows! so i told him to make the call and find out for sure. His reply was.....and i swear he said tis to me "Thats like me calling the back and asking how many pennies are in a dollar" And i replied "well you can call me an idiot if they tell you what your telling me!" .......one week later i had my windowless cap on!