AO Smith 81 Gallon - 154,000 BTU Commercial Gas Water Heater

BTR-154 Water Heater Specifications Gallon Capacity - 81 Gallons Recovery Capacity GPH 100° Rise - 149 Vent Size (inches) - 6 Input BTU/HR - 154,000 Height to Vent (inches) - 73 Diameter (inches) - 27 3/4 Three year Limited Tank Warranty Codes and Standards Design-certified by UL (Underwriters Laboratories), according to ANSI Z.21.10.3 - CSA 4.3 standards governing storage-type water heaters Meets the thermal efficiency and standby loss requirements of the U. S. Department of Energy and current edition of ASHRAE/IESNA 90.1 Design-certified by Underwriters Laboratories Sanitation to NSF Standard 5 for 180°F (82°C) water Optional ASME tank construction available