Features：1、Circulating Heating: Heating with water, the cold water is turned into hot water through heat energy, suitable for the simultaneous use of solar panels (not shipped with solar panels). 2、Specially Designed Built?In Flow Restrictor: Make sure maximum heat exchange, designed to minimize pressure loss in the heating system. 3、 Materials: Made of stainless steel material, corrosion resistant, rust proof, and durable. 4、Easy To Install: Equipped with stainless steel fixing brackets, easy to install and use, small and compact, requiring minimal installation space. 5、Wide Range Of Applications: Suitable for all types of swimming pools, spas and hot tub, hot springs.Specification：Item Type: Swimming Pool Heat ExchangerMaterial: Stainless SteelColor: As shown in the pictureProduct Size: Approx. 27.5x16cm / 10.8x6.3inWeight: Approx. 3082g / 108.7ozSide Thread: Female thread 45mm / 1.77inFront and Rear Threads: Female thread 32mm / 1.26inSpecification: 25KWMaximum Working Temperature: 230 DegreeF (110 DegreeC)Application: Suitable for all types of swimming pools, spas, hot tubs hot springsPool area (gallons)Requires increased temperature 1℉/hourRequires increased temperature 2℉/hourRequired boiler (btu/hour)Model of heat exchangerRequired boiler (btu/hour)Model of heat exchanger200016.683MF-8033366MF-80400033.36666732600050.049//800066.732//1000083.415//Package List：4 x Accessories 1 x Swimming Pool Heat Exchanger 1 x Instruction Manual