2025 KEYSTONE Avalanche 366LS is a fifth-wheel RV designed for luxury and comfort. It has an exterior length of 39 feet 11 inches and features five slideouts, providing a spacious and open living area. It has a dry weight of 13,000 lbs, a hitch weight of 2,360 lbs, and a GVWR of 16,000 lbs. It is designed to sleep up to four people.
The interior features a residential-style living area with opposing slideouts, a hide-a-bed sofa, and theater seating. The kitchen is equipped with a 16 cu. ft. residential refrigerator, a 3-burner cooktop, a residential microwave, and a large island. The private front master bedroom has a king-size bed, a large wardrobe, and washer/dryer prep. The full bathroom has a large walk-in shower with a seat.
The RV is built with a six-sided aluminum frame and a laminated fiberglass exterior. It is part of the "Four-Season Living" package, which includes a heated and enclosed underbelly, insulated slideout floors, and a 35,000 BTU furnace. It comes with a 50-amp electrical service and dual 15,000 BTU A/C units. It has a 66-gallon fresh water tank, a 98-gallon gray water tank, and a 49-gallon black water tank. Other features include a 6-point hydraulic auto-leveling system, a 19-foot power awning with LED lights, and a solar prep.