In wind tunnels, stacks of thin aluminum honeycomb cells are used to straighten the airflow for aerodynamic experiments. The tightly packed cells have little air resistance, yet as turbulent air moves through it is forced into a more laminar flow pattern. This is the premise behind Nexus' BeamAir series of hexagonal computer fan airflow straighteners. The small plastic honeycomb devices attach to the back of any thickness of 120mm or 92/80mm fans.

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