2017 Keystone Montana High Country 353RL, 2017 Keystone RV Montana High Country 353RL High Country's Helium Technology utilizes advanced materials and manufacturing technology to significantly reduce weight while maintaining all the features, comforts and luxury you expect in a Montana. Because Helium Technology saves you 1300-2500 pounds compared to typically equipped fifth wheels, you can reduce wear and tear on your tow vehicle, improve fuel economy and maximize the towability of your 3/4-ton truck. :// /--xInventoryDetail?id=1984090,