2025 Forest River Sierra 3900HBLR, Introducing the 2025 Forest River Sierra fifth-wheel, featuring a spacious length of 42.8 ft and a dry weight of 13,284 lbs, making it perfect for extended adventures. This new model comfortably sleeps 4, ensuring ample room for family and friends. The Sierra is known for its exceptional build quality and reputation in the RV community, providing a reliable and enjoyable travel experience. With a robust 40,000 BTU heater and a 30,000 BTU air conditioning system, you will stay comfortable in any climate. Experience the great outdoors without sacrificing comfort. Schedule your tour today!