… fan and elements for changing the temperature and humidity, including those machines in which the humidity cannot be separately regulated. …
Explanatory notes
… fan and elements for changing the temperature and humidity, including those machines in which the humidity … (a heating or cooling element or both) and the humidity (a humidifying or drying element or both) of air, and (3) For … 2 (c) to Section XVI, depending on whether or not they are identifiable as suitable for use solely or principally with …