Save yourself some headaches. Do not put a lot of faith(if any) in Keystones Arctic Package, Polar Package, or whatever cold weather capabilities that Keystone promote in their brochures. A search will reveal several threads on that subject and what many of us have found as to what it contains(or doesn't) and does not do. Keystones, even the high end models, are not four season trailers and you need to take the appropriate cold weather precautions.