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FAS Fans under front edge FAS ports on the inside edge direct flow across the surface
NOTE: Flow sensor is not a calibrated volumetric airflow device.
The Recirculation option is intended for facilities that do not have available HVAC exhaust flow
available for temporary use or in limited-use environments.
The backdraft air is pulled through the hood by variable-speed blowers and cycled through filters in an effort to
remove particulates and fumes before exhausting back into the room at the top of the unit. On the ventilation
screen, the Recirculation Fan speed can be turned ON/OFF and increased and decreased with the use of the arrow
buttons.
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