Reliance 40 Gallon Natural Gas Water Heater with Power-Vent efficient and versatile heating with its 40-gallon capacity and natural gas fuel source. This model features a power-vent system with a 3-position rotatable blower, allowing installation flexibility at 9, 12, and 3 o'clock positions. It includes hot surface ignition and uses durable vent materials such as ABS, PVC, and polypropylene. The venting system supports lengths up to 125 feet with 3-inch diameter venting or up to 180 equivalent feet with 4-inch diameter venting, with adjustments needed for each installed vent elbow. Installation requires a 120V power supply and accounts for additional height when using a 90-degree vent elbow on the blower in the 12 o'clock position. The heater is insulated with 2 inches of material and comes with a factory-installed temperature and pressure relief valve. It is backed by a 6-year limited warranty on both the tank and parts. The unit measures 70-1/4 inches in height from floor to top of blower and has a diameter of 20 inches. This model replaces Model No 6-40-YBVIT. Model Number: 6-40-YBVIT