The 4 kW Center Post Flo-Thru Heater Element is a dependable replacement part for maintaining efficient spa and hot tub heating. Designed with a center terminal configuration, it fits seamlessly into a variety of Flo-Thru heater assemblies and offers versatility across multiple brands. Constructed from corrosion-resistant incoloy metal, it delivers consistent performance and long service life, even under high heat and frequent use. With support for both 240V and 120V systems, this heater element is an excellent choice for easy replacement and reliable water temperature control.