Universal Compatibility & Extended Adapter: The fountain is designed to seamlessly fit most 1.5 inch threaded fittings, making it perfect for a wide variety of in-ground and above-ground pools. To add to the convenience, an additional adapter is included that adds compatibility with 1-1/2-inch external return and 2.2-inch external return nozzles. Effortless Installation: Simply remove the return eye fitting, install the fountain, adjust it to your preferred direction and witness a breathtaking water display. It's that easy to bring an extra touch of excitement to your poolside. Versatile and Adjustable Design: Our pool waterfall fountain features an adjustable control for a tailored water show experience. Adjust the height and width of the water streams to create a gentle and serene or an invigorating and display. The direction is also modifiable to suit your aesthetic preferences, making this a centerpiece of your outdoor space. Multi-functional Fountain: Apart from the aesthetic appeal, the fountain delivers functionality through cooling down pool temperatures by introducing air into the filtered water in a form. This makes for a refreshing throughout the year and prevents stagnation, ensuring a healthy and exciting swimming experience.