Parker Chomerics offers various types of ventilation grilles for optimum air flow in combination with shielding against EMI:
The Cho-Cell grids offer low air resistance combined with a high degree of shielding due to the large open area of the honeycomb and the combination of the cell size ratio and plating of the honeycomb.
The Omni Cell grids are constructed from two layers of honeycomb placed orthogonally to each other to eliminate polarization effects. The construction is chromated. It offers a cost-effective alternative to the Cho-Cell construction because it is not plated. It does result in a deeper grid, which is beneficial for shielding but also causes a slightly higher air resistance.
The VIP grilles are used for low air velocity systems and offer EMI shielding combined with a higher level of dust protection on the air inlet side, as they can be used with a non-liquid oil coating that is easy to clean.
A combination of foam filters and grilles is also possible to further improve air filtration. Parker Chomerics ventilation grilles are thoroughly tested and proven in aerospace and demanding industrial and military systems.
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