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[title] Fan Director (Optional)
[* red] Optional fan deflector can be mounted between fan flange and fan. Fan director improves CO2 clearance by directing more airflow towards inspiration / expiration zone of PAPR.
[* black] Addition of fan director can make a difference if CO2 clearance is an issue for user activity. For instance, I can climb two flights without a fan director before noticing increased respiratory drive from CO2. With fan director, I can climb multiple flights.

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