It would be great if I could find someone who has the Pronghorn close to this model and maybe same year. I'm looking at this RV to purchase but I don't see anything on the RV or paperwork about it having or not having a 4 season package of some sort. I've provided the VIN number to Heartland and they have provided me the original production order for the RV and it lists all the features it has and I don't see any comment about an arctic pack or 4 season pack but I don't know for sure that in 2011 for this RV they even had packages like that. I question if they had a pack like this at the time because when I look up NADA for this RV there is no optional "arctic package" or "four seasons package" to check. I thought maybe if I found someone here who has a 2011 Big Horn that has a 4 season pack of some kind I would know they did have such a thing at that time. I would be very open to any other opinions anyone may have about this particular RV. Thank you for any help!