Kasco Marine 3400CF050 - Water Circulator, With Float, &frac34;hp, 120 volts, 50' Cord High-efficiency design means low power compensation and low operating costs Heavy-duty motor and corrosion resistant design; suitable for salt-water or other corrosive environments Safety Tested: ETL listed to UL and CSA Standards, 50Hz model CE markedy An easily replaced protective sacrificial zinc anode included with each unit / 2 year warrant Low maintenance and dependable design