Brett Aqualine 4kw replacement heater assembly. The stainless steel heater assembly measures 2"x15" and has a 1/8"npt pressure switch tap. It includes a 4.0kw/240v heater element along with 2" split nuts and tailpieces. This heater is commonly used in the Brett Aqualine EM100/190 systems. Pressure switch is not included. This heater assembly will replace part numbers C2400-0314ET, 20-00317, 22-5011 and90-225011.