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What is Unidirectional Airflow?

Unidirectional airflow is where a fluid flows in one direction, with no interruptions from turbulence.  Also termed laminar flow.

In the case of a laminar flow unit, clean air has a unidirectional down flow from the face of the fan filter unit. The accurate terms to describe these units are unidirectional airflow cabinet and down flow booth; however laminar flow cabinet or booth is the cleanroom industry's preferred term. 

Laminar Flow CabinetsLaminar Flow Canopies

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