Eemax EX144TC, 5 x 11 x 11, Grey Element - Dual replacement cartridge inserts - connections: 3/4 inch NPT Compression at bottom of unit Rise at 1.5 GPM 65 DegreeF - rise at 2 GPM 51 DegreeF - rise at 3 GPM 34 DegreeF - wire size awg 8 Volts 240V - kW 15.0kW - Amps 64(2x32)a Field Serviceable Elements replaceable cartridge element - unit must be mounted on wall On demand hot water - no delay - continuous hot water - no storage capacity to run out