The Flo-Thru Universal Rite-Fit Heater Replacement 240V 4kW is an efficient and durable heating solution for spas and hot tubs. Featuring a 4.0 kW rating and designed to operate at 240V, this heater delivers reliable performance to maintain your desired water temperature. Its flow-thru design allows for consistent heating while the 304 stainless steel material and Incoloy element type ensure long-lasting durability and corrosion resistance. With 2” inlet/outlet size and adjustable components, this heater is compatible with Gecko control systems and can replace various HydroQuip models.