ditto with the above post about the polar tech insulation. We are on the Alabama gulf coast now and have had some mid-20's and low 30 nites and two electric heaters set on low keep our trailer 68 at nite with the furnace rarely running. Just filled a 30 lb propane tank after 3 weeks of use.
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Dale & Carol
Bradley, Il
2007 F-250
2010 CF30SK Patriot
2007 CF30SK