The Dunkirk H2oI 80 gallon indirect water heater offers top-of-the-line performance.  The tank and coil are constructed of 316L series stainless steel offering unparalleled longevity.  Matched with a boiler output of 150,000btu, this tank is capable of delivering 271 gallons in the first hour.  Perfect for high-demand hot water needs,  it is suited for households with large bathtubs, shower systems with multiple body sprays, or any other situation requiring a large amount of hot water.  Limited Lifetime Residential Warranty.