Eemax SP4277, 14.00 x 11.65 x 11.00, White Ease of installation - No T and P valve needed - Only bring one cold water line to lavatory Connections: 3/8-Inch compression fittings at top of unit Voltage: 277V, Power: 4.1kW Temperature rise at .5GPM = 56 Degree Fahrenheit, Turn on: 0.5 Dimensions: 10.75-Inch W x 5.25-Inch H x 3-Inch D