I would find another dealership. He is not selling quality trailers.
I have a 1997 Bounder built and taken delivery of it November 8, 1996, so it is well over 15 years old, with no problem in the dual pane windows. They are much quieter than the single pane windows, and better insulated for sure. No water collecting on the windows in the winter. It might not make to much of a difference in a trailer, but in a motorhome, the less noise inside while going down the freeway it is well worth the option cost of dual pane windows. Not having water on the inside of the windows anymore also make it worthwhile.
My older RV, I had to put a pillow near the window to keep the cold draft off my neck while watching a movie, while sitting on the dinette. Not having that problem with this RV.
Fred.
Money can't buy happiness but somehow it's more comfortable to cry in a
Porsche or Country Coach!
If there's a WILL, I want to be in it!
I havn't been everywhere, but it's on my list.
Kangen.com Alkaline waterEscapees.com