SE62-80H-045S American Water Heater 80 Gallon Solar Storage Tank with Electric ElementIdeal storage tank for replacement or customized applications. Chosen by both Alternate Energy Technologies and Heliodyne for use in their solar hot water systems. 2” Non-CFC Foam Insulation - Foam insulation traps heat within the glass-lined tank, saving energy. Tank R-Value of 16.7 Anode Rod - Promotes longer tank life through protection against corrosion of tank interior. Factory-Supplied Top Temperature and Pressure Relief Valve Factory-Installed Dielectric Nipples Pre-Wired Sensor Lead - From storage sensor mounting stud to top of tank. Does not include sensor. Water Connections - Accessible from four 3/4” dielectric nipples located on top of tank. Optional Solar Circulation Connections on Side 4500-Watt Heating Element and Automatic Thermostat - Where a back-up system is desired. UL Listed Warranty: 6-year parts, 6-year Tank