Overview: CHO-CELL Shielded Vents are high-performance honeycomb air vents designed by Chomerics for high-frequency environments, meeting TEMPEST specifications. They offer over 90 dB attenuation between 200 MHz and 10 GHz, outperforming conventional panels by 30 dB due to unique design features, including a CHO-SEAL mounting gasket.

Specifications: The vents are constructed with a honeycomb core made of 0.002 in. (0.051 mm) foil, 0.125 in. (3.2 mm) cells, and 0.500 in. (12.7 mm) thick aluminum, finished with electroless nickel per MIL-C-26074C standards. The frame is made from aluminum alloy 6061-T4, also finished with electroless nickel. The mounting gasket is CHO-SEAL 1215, a silver-plated-copper filled silicone. Sizes are customizable up to 24 x 24 in. (61 x 61 cm).

Design Features: CHO-CELL vents are lightweight, free of polarization effects, and offer low air resistance. They are available in custom configurations with thru-hole mounting options.

Ordering Procedure: Panels are made to customer specifications, with part numbers provided by Chomerics. Customers are advised to contact the Applications Engineering Department for orders.

Performance Data: The document includes a graph illustrating insertion loss through apertures of various sizes, demonstrating the vents' effectiveness in shielding against electromagnetic interference (EMI).

Additional Information: The document references additional data on shielding effectiveness available on page 168 and provides detailed dimensions for alternate extrusions used in CHO-CELL construction.