We ordered a 399th at a RV show last year and the unit that the sales person walked us through had a 3 season door in it. At that time I didn't realize that it was an added option and didn't think to ask. So when we took delivery of it, I found out !! After having camped in it a handful of times, I realized that pulling up the screen every time you want to go out is a pain. So my question is does anybody know if it can be fitted as an after market option?
Thanks in Advance!
Anupam