Rheem PROG50-38N RH58 Professional Classic Tall Residential 38K BTU Atmospheric Natural Gas Water Heater, 50-Gallon
Efficiency: .58 - .62 EF, More hot water at a low operating cost - Performance: FHR: 50 to 90 gallons for natural gas, Recovery: 30.3 to 50.5 gallons at a 90 degree rise, based on model - Guardian System & Sensor: Exclusive air/fuel shut-off device, Maintenance free - no filter to clean.