Trachea (Generation #1) Primary Bronchi (Generation #2) Conducting Airways Generations 1-16 2 o Bronchi (Generation #3) Respiratory Zone Generations ~17-23.
ComfortLink™ II Control. ComfortLink™ II Smart Control This is not just a thermostat. It’s an energy command center. Trane ComfortLink™ II is an easy-to-use,
