Heated enclosed holding tanks and Superior insulation and construction is what separates the Fox from all others. the one experienced RVers come back for again and again ! Fifth Wheels Fifth Wheels 6760 PSN . 2015 Arctic Fox 27-5L All new graphics & colors ! Featured here is the 27-5L Silver Fox Edition Arctic Fox. A true 4 season coach built to withstand all climates. Even sub zero weather. When only the best will do. Go with the Fox. Real quality is visible everywhere you look...