Voltage Rating : 240 V Current Rating : 113 A Wattage Rating : 27 W Frequency Rating : 50/60 Hz Number Of Phases : 1 Inlet Connection Size : 3/4 In Flow Rate : 0.3 Gpm Pressure Rating : 25 To 150 Psi Energy Efficiency : 99.8 % Heating Chamber Material : Copper Cable Size : 8 AWG Mounting Type : Wall Dimensions : 17 In W X 3-5/8 In D X 17 In H