Hot Tub Compatible With Sundance Spas Filter Inner Core SUN6473-164This hot tub is specially designed to work with your Sundance Spas filter inner core SUN6473 164, ensuring optimal performance and longevity. Its compatibility allows for a seamless integration, providing superior filtration and improved water clarity. Relax and enjoy the benefits of a perfectly maintained hot tub with this compatible product. Hot Tub Compatible with Sundance Spa Micro Clean Ultra Filter Inner Core, 2009+ 880 Series, SUN6473 164 You