Dual pane windows.....add weight? Reduced CCC?

ACZL wrote:
How much weight do dual pane windows add to a 5er over single pane? Seems to me that if they add quite a bit of weight that reduces your CCC.

years back some mfrs. couldn't offer them in some of their RVs due to weight. so you are correct about dual pain windows but with an adequate frame under the RV there are other things to worry about with them.
bumpy