2026 Forest River Sandpiper 3990FL, Introducing the 2026 Forest River Sandpiper 3990FL, a stunning new addition to the fifth wheel category. With a spacious length of 43.5 ft and a dry weight of 12,439 lbs, this RV is perfect for family adventures, comfortably sleeping 8 individuals. Equipped with a powerful 30,000 BTU air conditioning and a 40,000 BTU heater, it ensures year-round comfort. The Sandpiper's generous black and fresh water capacities of 50 gallons each make it ideal for extended trips away from home. Experience the freedom of the open road and create lasting memories with family and friends. Schedule your tour today!