Experience the world around you with the Smartop Vanish XL. Finger-tip light and velvet-smooth opening and closing, make positioning the Smartop in the open position nearly effortless and creates a 360-degree view for you to enjoy during your hot tub experience. Available for spas measuring up to 120 inches. A minimum of 28 inches of clearance is required behind the spa and 5 inches on each side.