Stiebel Eltron Mini Electric Tankless Water Heater, 240/208 V, 24 A, Wattage Rating: 5.7 kW, Frequency Rating: 50, 60 Hz, Number of Phases: 1, Inlet Connection Size: 3/8 in, Outlet Connection Size: 3/8 in, 0.77, 0.48 gpm, 150 to 300 psi, Energy Efficiency: 99 %, Heating Chamber Material: Copper, Cable Size: 10/2 AWG, Wall Mounting, Housing Material: Polycarbonate Plastic, Dimensions: 6-1/2 in H x 7-1/2 in W x 3-1/4 in D