replacement windows- regular home windows vs. RV windows

Good point-

The windows I have found do have the normal flange. But the thickness of the frame is only a little over two inches. The RV wall is 1-1/2" and I can compensate for that with some trim around the windows when I do the valance.

I still go back to thinking they would work. And then keep going back and forth because you would think you would see them used if they would work. They certainly cost a lot less.

They sure work a lot better than the stupid windows that are normally in RV's.

Thanks for the input.