Newmar stopped single pane in the drivers cockpit years ago due to the problem I am posting about--- Single Pane windows rattle more than dual pane windows. Newmar changed out a lot of drivers side single panes for dual panes years ago due to the rattle issue(rest of motorhome had dual pane). They ARE cheaper than dual pane. Deal Breaker? Probably NOT as you GET WHAT YOU PAY FOR. I would prefer dual pane windows as the majority of motorhomes have them. But, the PRICE of the RV probably reflects all items including single pane. Doug
