I just purchased the Laredo 320TG. When we had the 2nd A/C installed I inquired about having it ducted but was told they typically would not because the duct wasn't large enough to handle the additional air flow. This could cause the unit to not push enough air which could lead to it icing up. So its not attached to the "race track". which is fine since the bunkhouse was warm anyway. The main A/C works great to keep the rest of the unit cool.
4-Bear's (Britt-Marie, Emma, Amanda, Richard)
2010 Ram 1500 Big Horn, 5.7L HEMI
2014 Keystone Laredo 320TG