There are a lot of companies that throw the "glacier package" term out there but have exposed tank dump valves, no compartment for water hookups, and basically some foil insulation stuffed around your tanks. If you're truly living in this unit dump any "lightweight" trailers off the list and stick with a Nash product. They manufacture their own frames in house, build a heavy duty coach, and are truly built for living and cold weather use. Another plus, unlike most aluminum framed walls, Nash has wood cored aluminum framing to ensure no voids in insulation and provide a solide surface to screw into.