Eemax EX280T2T Series Three, Whole House Electric Tankless Water Heater Ease of installation - No T and P valve needed - Only bring one cold water line to lavatory 3/4-Inch Male NPT fittings on bottom of unit Voltage: 240V, Power: 28.5kW 4 GPM, Temperature rise at 2.5 GPM = 76 Degree Fahrenheit Dimensions: 15 1/4-Inch x 12 1/4-Inch x 4 1/4-Inch