David
If you are going to get the dual panes on the 3400 Jo-Anna won't have the option of keeping the bedroom window open at night except for the itty-bitty one in the slide. The main window does not have a screen when you dual panes unless you can have one made for it. Another reason I'm glad we don't have dual panes. We open the vents more than the windows for fresh air in the bedroom since there are two plus the one in the bathroom.
Happy trails......................
Sue and Ed Rowe
Hemet California
2005 3400RL
2006 GMC 3500 Dually, D/A, Crew Cab, Long Bed