Our 2005 3400 and 2010 365 Big Sky did not have dual pane glass. Our 2015 3160 does have dual pane and is much quieter. Not enough to keep Goshen train noise out completely, but better. As Bigskyjimmy suggested, that could be the difference.
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Ron and Terrie Ames - MOC #1920/KF0NTA
2021Montana 3230CK Super Solar Legacy Package
2021 Ram 3500 Laramie Longhorn, BIM Charging
4x4, SRW, LB, Crew Cab, Pullrite 3900 Hitch
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