Rinnai 3-Unit Interior NG Back-to-Back Free Standing Rack

This free standing, three unit system is an ideal replacement for domestic boilers and is great for hospitality, multi-family, industrial, and school applications. Features: * 97% Thermal Efficiency * Warranty 1 year on Rack Components/ Refer to tankless water heater model warranty details * 15,000 BTU (minimum) 597,000 BTU (maximum) * Indoor Only