TECHNICAL BULLETIN NUMBER 202

EMI VENT

PA N E L S

CUSTOM-ENGINEERED
SHIELDING PRODUCTS

Metex Electronic Shielding Products
The diversity and versatility of our product line enables Metex to offer a wide range of custom
solutions to optimize shielding effectiveness.We provide both off-the-shelf and custom designs in
commercial and military-grade materials to ensure EMC integrity and quality. From prototype to
volume production, our product line includes:
• Knitted Wire Mesh
• Conductive Silicone Adhesive
• Vent Panels/Mesh Screens
• Shielding Tape/Foil Laminates
• Spring Fingers
• Fabric Over Foam Gaskets
• Conductive Fabric
• Connector Gaskets
• Oriented Wire
• Braided Rope
• Braided Sleeving
• Wire Mesh Gaskets
• Shielded Windows

METEX has been a pioneer
in EMI/RFI gasketing and
shielding products for more
than five decades. In fact,
METEX developed the very
first EMI/RFI gasket to help
MIT solve a severe interference problem for the earliest
high-power, high-frequency
airborne radar.
That pioneering spirit is
still alive today—with a complete line of military and
commercial-grade EMI/RFI
shielding solutions.
As communications and
information technologies
expand, the need to provide
EMI/RFI solutions becomes
more critical than ever
before.

Complete support—
from technical review to
design and application
assistance

Metex Europe
4, Rue Pierre Brossolette
92130 Issy Les Moulineaux
France
Phone:
33 (0)1 46 45 99 55
Fax:
33 (0)1 46 45 99 07

Metex Mexico
Metex Mexico
Parque Industrial La Mesa
Calle 34 sur s/n fracc. Rubio Edif. B. Suite B-2 La Mesa
Tijuana, Baja California Mexico
Phone:
011-52-66-45-11-49, 011-52-66-45-11-48
Fax:
011-52-66-45-11-46

Honeycomb Shielding
Aluminum: The standard structure is 1/8" cell adhesive bonded honeycomb,
available in 1/2" or 1/4" thickness. Steel and Brass honeycomb shields are
available on a custom basis.
Shielded Mesh Screens
Shielded Mesh Screens replace honeycomb media with several layers of
woven wire mesh. They are designed for use on shielded electronic enclosures which require filtered air. Mesh screens are easily removable for cleaning.
Framing Options
Standard frame material is extruded aluminum 6063 T-4 alloy. Various Cframe cross sectional configurations are shown on page 2. Many other sizes
and styles are available. EMI gasket options include wire mesh and elastomer, groove mounted wire mesh, spring finger gaskets, Metex oriented wire
or Metex CF conductive fabric over foam gaskets.

Our EMI Vent Panels continue a long-standing Metex tradition of integrating the right
designs, materials and production methods to meet customer needs for optimal performance at
the lowest possible cost.

Metex Corporation
970 New Durham Road
Edison, New Jersey 08818
Phone:
732-287-0800
1-800-222-0969
Fax:
732-287-8546
E-mail:
sales@metexcorp.com
Website: www.metexcorp.com

Metex EMI vent panels provide maximum attenuation with minimal air flow
resistance. Shielding effectiveness is greater than 80 dB at 10 MHz for chromate finished, single layer honeycomb and is increased to 105 dB using our
cross cell construction. By selecting the appropriate frame style, finish, and
gasket type, performance can be custom tuned to meet your shielding
requirements and your budget constraints.
Vent panels are constructed of aluminum alloy honeycomb with a
perimeter frame of aluminum extrusion for mounting and gasket applications. Various gasket options include wire mesh, spring finger or conductive
fabrics.

Mounting
Panels are typically mounted to an enclosure using captive threaded inserts,
and threaded fasteners.
Shielding Effectiveness
Depending on their size, type of material, finish and gasket type used, vent
panels vary in shielding effectiveness. As an example, a 12" square, tin plated aluminum vent panel with a wire mesh gasket, will provide greater than
90 dB of attenuation, at 1 GHz plane wave. Metex can provide shielding
effectiveness data for your specific vent panel design.

World-class EMI/RFI
manufacturing capabilities