I agree with Dave,
Our 2980RL purchased in Canada, seems to come with all options,
including dual pane windows, It is easy to control heat inside, Summer & Winter.
Also very sound proof when we listen to the surround sound late at night.
( I've gone outside and shut the door, could not hear a thing ).
Or parked close to a freeway..... still quiet inside the unit.
I think they are worth the money spent.
J&D
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[IMG]John & Dawn
Sunshine Coast, British Columbia
2006 2980RL &
2005 F350 Lariet, Crewcab
Shortbox Powerstroke 4X4