We don't have the dual panes and since we don't plan on spending time in heat or cold, don't miss them. However, for those thinking about buying a Montana, I would like to clarify the noise thing. If all the vents are closed (ours never are) the inside of the Montana is very much isolated to outside noise. We had neighbors next to us at Flagstaff and with only the bathroom vent opened and the bathroom door closed, we did not hear them leave (diesel). So if the noise thing is why you want dual panes, you don't need to.
Happy trails............................
Sue and Ed Rowe
Hemet California
2005 3400RL
2006 GMC 3500 Dually, D/A, Crew Cab, Long Bed
