Just got home with new rushmore and have a concern regarding dual pane windows. What model hehr window is used and is there an obvious way to determine if the windows are double pane?? I've seen and been around double pane residential windows and seems relatively easy to see the two panes. However, my windows are either extremely thin paned with a wide gap or one rather thick pane. They don't seem to stop/inhibit noise will either. Anybody with a little help.