When using a chair lift, the person is seated, raised, and then easily swings into your RV using the double hinged bracket. Minimal modification is needed for your vehicle. The chair is constructed of durable aluminum. Like the chair assembly, it is easily removed for travel. The platform lift is a skid resistant platform that can easily be attached to your RV. The Lectra Aid standard 48 inch model travels 40 inches and lifts up to 250 pounds. The lift is very compact: approximately 50 inches high and 2.25 inches in diameter. When traveling, the platform is removed for storage.