Product information, Size: 110 x 171 cm, Suitable for filter pumps up to 2,500 GPH and sand filter systems up to 2,200 GPH flow rate, Increases water temperature by 3-5 ºC depending on weather conditions, Durable, weather-resistant material, Easy assembly thanks to the included adapters (for 1.25-inch and 1.5-inch hoses), Required number of heating units may vary depending on pool size, , Contents:, 1 heating unit