Enjoy your indoor time. The FreshJet Mechanical Air Distribution Box (ADB) is easy to use, simply twist a knob to set the temperature and fan speed to welcome refreshing air. State-of-the-art construction delivers superb front and back airflow allowing you to peacefully reset after a long day of exploration. Easy to Control: User friendly knobsWhisper Quiet w/Powerful airflow.Non-ducted applicationsPowerful, front and back airflowTwo-piece design simplifies assembly and installationModern, low-profile designBackwards compatible with legacy Dometic and competitive air conditioners