EF-100T-300E-3N Bradford White 100 Gallon 300,000 BTU Commercial eF Series High Efficiency Gas Water HeaterThe eF Series utilizes exclusive designs and technologies for unsurpassed installation flexibility and performance. Ultra High Thermal Efficiencies make the Bradford White eF Series an exceptional commercial gas water heater. Several eF Series models are now ENERGY STAR qualified. Last but not least, the eF Series is extremely quiet, a feature building owners, managers and occupants will appreciate. ICON HD® - Intelligent proven design combines temperature control, diagnostic codes and system ignition functions into a single control board with a digital LCD display ENERGY STAR® Models Available - EF60T125 & EF100T (150,199,250,399) Models ASME Construction Available Electronic Controls Low-NOx Premix Power Burner Three Pass Flue System Flexible Venting Options Vitraglas® Lining Hydrojet® Sediment Reduction System Dielectric Fittings Non-CFC Foam Insulation Four Protective Magnesium Anode Rods (Except EF-100T-399) Two Powered Anode Rods and One Non-Powered Anode Rod in the EF-100T-399 Hand Hole Cleanout Zero Inch Clearance to Combustibles NSF Construction Available T&P Relief Valve Low Restrictive Brass Drain Valve Complies with the Latest Ultra-Low NOx Requirement (14 ng/J NOx Limit)