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The GG50T12DXV RealMAX Platinum Natural Gas Ultra Low NOx Water Heater by GE features Low Emissions environmentally friendly burner that meets requirements California & Utah Residents.The water heater also features quick recovery. GG50T12DXVRealMAX Platinum 50-Gallon Tall Natural Gas Ultra Low NOx Water Heater with 12 Years Parts Warranty in Diamond.