Booster Heater,electric,9.9 kW,3-gallon storage capacity,ASME stamped stainless steel tank with CFC/HCFC free closed cell foam insulation,electronic display controller with low water cut-off & leak detection,stainless steel exterior,T&P relief valve,UL,cUL,24-volt heater interlock adapter,ASME,UL EPH (ANSI/NSF 5),Phase 1,208V