WTR HTR NG 40G TALL 6YR Brand Name: Reliance Tank Capacity: 40 gal BTUs: 35500 BTU Power Source: Natural Gas Tankless: No Product Type: Water Heater Energy Star Certified: No Height: 62 in. Diameter: 20 in. Low NOx Burner: Yes Amps: 0 amps Volts: 0 V Width: 20 in. Depth: 20 in. Warranty: 6 yr Maximum Elevation: 10100 ft. Commercial or Residential: Residential Temperature Pressure Relief Valve: Yes Water Connection Location: Top Vent Diameter: 3 or 4 in. Maximum Temperature: 155 °F CSA Listed: Yes Maximum Pressure: 150 psi Minimum Temperature: 55 °F Water Connection Size: 3/4 in. Gas Connection Size: 1/2 in.