Circulation Booster Heater Elements 1 000 W Watts Sheath Material Steel Watt Density 23 sq in Heater Voltage 240V AC 1 Phase Overall Length 20 4/9 in Control Range 150 Degrees to 560 Degrees F 1 1/4 in NPT Enclosure Type NEMA 1 Min Immersion Depth 15 1/4 in For Use With Mfr No CHF02309 Includes Thermostat