2017 Keystone Montana Legacy 3661RL Fifth Wheel 2017 Keystone Montana Legacy 3661RL Fifth Wheel, a luxury 39.4 ft RV designed for comfort and convenience, perfect for full-timers or extended trips. Featuring 5 slide-outs, this spacious unit is built for all seasons with its 4-season all-weather rating and heated freshwater and black water tanks, ensuring year-round use in any climate. It comes equipped with auto-leveling jacks for easy setup and two A/C units with individual thermostats to keep the interior at your desired temperature. Inside, enjoy the cozy ambiance of an electric fireplace and a ceiling fan for extra comfort. Entertainment is top-notch with three TVs, including a 55