Balboa Water Group 4kW 120/240 volts spa heater assembly with pressure switch. Used in Leisure Bay Spas. Stainless steel heater manifold measures 1-1/2" x 15" long and includes a heater element rated at 4.0kW 120/240 volts. Heater assembly also comes with a pressure switch, (2) 2" heater split nuts, (2) tailpieces & a pair of o-ring gaskets. Can also replace the Balboa part# 58004.