The 4kW Titanium Vertical LoFlo Heater Assembly is a universal replacement heater designed for spa and hot tub systems that utilize low-flow circulation pumps. Made with titanium, it offers exceptional corrosion resistance and long-lasting durability, ensuring efficient and reliable heating. The vertical low-flow design is perfect for systems using Laing, Grundfos, and Tiny Might pumps, while the built-in manual reset hi-limit ensures enhanced safety. This heater also includes adjustable sensor cover kits, barb ports for flexible plumbing, and a 60” amp cord with terminals for easy electrical installation.