IQAir VM InflowQuick Overview The IQAir VM InFlow ducting adaptor is a wall mounted adaptor for the IQAir air filtration units compatible with all IQAir Cleanroom, HealthPro, GC, GCX and Dental units and is used to create over or under pressure environments. The IQAir VM Inflow creates a positive pressure when placed inside the room and a negative pressure when outside of the control environment. The IQAir VM InFlow is used in many hospital settings, such as