Rheem Commercial Universal Ultra-Low NOx (ULN) Natural Gas Water Heaters are designed to fit into tight retrofit applications and have the features and capacity to meet heavy duty demands. The tighter the commercial retrofit, the more you will appreciate how the Universal's compact size and multiple water connections simplify installations. Top, Front and Rear water inlets/outlets offer installation flexibility giving this water heater the name: Universal. Please Note: This model requires a 120-Volt power source.
