National Item Identification Number
National Stock Number
Federal Supply Class
A unit specifically designed for heating water by a direct fired method, utilizing a gas fuel burned in a combustion chamber inclosed within itself. May be incorporated with a tank as an integral or as a separate unit for storage of the water so heated.
Commercial and Government Entity Code (Supplier Data)
Reference Numbers (Part Numbers)
SPECIFIC GAS FOR WHICH DESIGNED
HEATING CAPACITY PER HOUR