The RG1PV55H6N from Bradford White is a 55 gal, TTW Defender High-Recovery Power Vent Water Heater (NG). 

Features:

• Defender FVIR system w/ ScreenLok flame arrestor prevents ignition of flammable vapors outside the water heater;
• Vitraglas enamel lining helps to extend tank life;
• Hydrojet sediment reducing device increases 1st hour delivery and minimizes temperature build-up in tank;
• Powerful & quiet blower motor (120V) with 10ft cord resists powerful outdoor winds and offers more installation flexibility;
• Horizontal and vertical venting with PVC, ABS or CPVC;
• Non-CFC foam covers the sides and top of the tank, reducing heat loss;
• Factory-installed heat traps reduce stand-by heat loss;
• Sight window allows to observe operation of pilot and burner;
• (2) Protective magnesium anode rods;
• ASSE thermostatic mixing valve included.

Technical Specifications:

• Fuel: Natural Gas (NG);
• Nominal Capacity (Gallons): 55;
• Rated Storage Volume (Gallons): 55;
• Input (BTU): 78,000;
• Uniform Energy Factor: 0.61;
• Recovery Efficiency: 80%;
• 1st Hour Rating (Gallons): 117;
• Recovery Rise @90° F (GPH): 84;
• NOx Emissions: less than 40ng/J;
• Water Connections: 3/4" NPT;
• Gas Connection: 1/2" NPT;
• Side Connections: 3/4" NPT;
• Max Working Pressure: 150 PSI;
• Ignition Type: Electronic;
• R-Value: 8;
• Vent Type: Power;
• Vent Size: 3" or 4";
• Vent Material: PVC, ABS, CPVC;
• Max Vent Run: 50ft (for 3"), 180ft (for 4");
• Power Supply: 120V, 60Hz;
• Dimensions (Diameter x Height): 22" x 64-3/16";
• Weight (lbs): 219.

Warranty:

• 6-year limited tank warranties / 6-year limited warranty on components parts