Waveguide Ventilation Panels from MAJR Products

What is a Honeycomb Waveguide Panel

Shielding honeycomb waveguide panels let airflow into and out of an EMI/RFI shielded enclosure. The entering fresh air may be either cooled, heated, or at ambient temperature depending on the shielded enclosure environment and contents. For electronic equipment, the primary reason for airflow is usually to cool electronics; if a manned military shelter the reason is to circulate fresh air and to either cool or heat the air depending on the external environment.

EMI/RFI Shielded Honeycomb Ventilation Panels

EMI ventilation panels are ready-to-install EMI/RFI shielded panels in standard sizes made from brass, steel or aluminum for the electronics industry with minimum static pressure drop. Shielding effectiveness is accomplished using waveguide design principles of 4:1 opening to depth ratio.

The choice of an EMI/RFI vent panel that best meets a specific design consideration is based on three main criteria: shielding, airflow, and mounting. While they can be made in a variety of shapes and sizes, they still allow for maximum airflow. With integrated gasketing material appropriate for the application, these waveguide panels can be supplied with captive fasteners or frame through-holes mounting options.

Waveguide Ventilation Panels from MAJR Products

MAJR’s shielded honeycomb waveguide panels provide optimum EMI/RFI shielding with minimum pressure drop for the ventilating air. Their special design lets airflow into and out of an EMI/RFI shielded enclosure. This feature allows for the cooling of electronics as well as air circulation for manned military shelters as well as electronic boxes and cabinets. 

Honeycomb Ventilation Panels from MAJR Products include the following features:

Ease of Installation

Shielded air vents are supplied with EMI gasket and mounting holes or captive fasteners to be ready for installation into the cabinet.

Special Designs

MAJR’s engineering group can assist with applications requiring special mounting or


Painted Units

Vents mounted on the outside of the cabinet can be supplied with exposed surfaces painted to meet the Military Standard color of the cabinet.

Optimum Shielding and Airflow

Installation of the honeycomb — with its 4:1 opening to depth ratio — provides the

waveguide below cut-off effect required to attenuate EMI/RFI interference while not impeding the airflow required to cool the packaged enclosure.

Standard & Custom Configurations

A broad selection of sides provides the widest choice in meeting design objectives. MAJR Products also provides custom configurations for specialty installations designed to meet specific shielding, airflow, and mounting requirements.

Need EMI Ventilation Panels? Think MAJR Products!

MAJR Products is a leader in manufacturing EMI Shielded Ventilation Panels in both standard and custom sizes for the electronics industry. Whether your opening is round, curved or odd-shaped, we have the technical know-how and experience to add any design into our high-capacity manufacturing and metalworking capabilities.

MAJR Products, located in Saegertown, Pennsylvania, is one of the leading manufacturers of EMI/RFI gaskets, shielding, and ventilation panel products. We’ve been designing and developing solutions for over 25 years. Contact MAJR to connect with a specialist or receive a quote from our experienced team of professionals.