Raypak 105,000 BTU Swimming Pool and Spa Heater - Natural Gas 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 Unit measures 27.5" H x 12" wide X 24" Deep