2022 Sunset Park RV Rush 19FC, Key Features & Specs Construction: Powder-coated steel chassis, residential insulated walls, 3/8-inch fully walkable roof, and marine-grade floor decking. Cargo Capacity: Features a heavy-duty ramp door with spring assist, cargo lengths ranging from 10 to 15 feet, and an optional 30-gallon auxiliary gas tank. Interior Comforts: Comes with an outside shower, quick-connect gas line, Bluetooth stereo, microwave, and LED accessory lights.