About minus 10 degrees F while out at a local Lake spotting Eagles for two weeks. No skirting or other heating aides. We were very comfortable however we operated the furnace at all times plus the fireplace in the evening prior to bedtime. Our 36 RL was cozy and we had a terrific view of the lake.
Bob and Carol - Lees Summit, MO,
2016 Silverado 3500 HD, High Country DRW diesel, 3.73 gear ratio, long bed, 25K Reese Elite removable hitch with 2013 Redwood 36RL with 17.5" H-rated tires and MOR/ryde heavy duty shackle links and bushings; 6.5 KW gen