Features 1、Stainless Steel Material: The swimming pool heat exchanger is made of high grade anti corrosion stainless steel, anti rust and salt water resistance, durable. 2、Constant Temperature: It is heated by water, and the cold water is turned into hot water by heat energy, which is heated circularly. It is suitable for the simultaneous use of solar panels (shipped without solar panels). 3、Maximum Heat Exchange: Specially designed built in flow limiter aims to minimize the pressure loss in the heating system and ensure maximum heat exchange. 4、Space Save: Equipped with stainless steel fixed bracket, easy to install and use. Small and compact size, light weight. Minimum installation space is required. 5、Application: The heat recovery pool heater is suitable for swimming pools, spas, hot tubs, solar, hydraulic heating, oil cooling, heat recovery, snow melting, etc. Specifications Item Type: Pool Heat Exchanger Material: Stainless Steel Weight: Approx. 2837g/100.07oz Size: 34.2x15.7cm/13.46x6.18in Specifications: 40KW Note: Does not contain electricity Side Thread: Female Thread 45mm/1.77in Front and Rear Thread: Female Thread 32mm/1.26in Maximum Operating Temperature: 230℉ (110℃) Purpose: Suitable for all types of swimming pools, spas and hot pools and spas Type of Heat Exchanger: MF 135 Application Scenario: swimming pool, hot spring, hot tub Swimming Pool Area: 12000 Gallon, Temperature required to rise 1 ℉/h: 100098 btu/h; Temperature required to rise 2 ℉/h: 100098 Swimming Pool Area: 14000 Gallon, Temperature required to rise 1 ℉/h: 116781 btu/h; Temperature required to rise 2 ℉/h: 133464 Swimming Pool Area: 16000 Gallon, Temperature required to rise 1 ℉/h: 133464 btu/h Package List 4 x Part 1 x Heat Exchanger 1 x Instruction