Raypak Electronic Propane Above Ground Heater - 106,000 BTU Features and Benefits Designed for easy installation on above ground pools, smaller in-ground pools, and spas Standard 120v 3-prong power cord or can be easily converted to 220v Simple analog thermostat dial for accurate pool and spa temperature setting Gas connection is 1/2" NPT and measures 4 5/8" off the ground level