I'm looking to replace the window in the entry door of my rig. I've watched several videos online and it seems this window of mine is rather unique. Its in a 2002 Minnie24F and it appears that it is double paned. The seal has broken and the space between the two pieces is nasty. Has anyone replaced a similar entry door window? If so, where did you get the replacement. Or if you could explain how you did that. Thanks a lot.