DMC-HMB series honeycomb vent is widely used in EMC shielding field, for the air refresh system of the RF shielding room, microwave chamber or RF shielding box, The available materials include Aluminum, tin steel, brass and copper. The choice of the honeycomb vent with the best design is based on the RF shielding performance and air flow.
Available Cell diameter
3.2mm, 3.2mm, 4.8mm, 5.2mm, 8mm,
Available Thickness
12.5mm, 25mm, 50mm
Frequency Band |
Attenuation |
| 100KHz | >100dB |
| 1MHz – 10MHz | >100dB |
| 10MHz – 30MHz | >100dB |
| 30MHz – 1GHz | >100dB |
| 1GHz – 10GHz | >100dB |
All above is the common size RF shielding door, it’s available to design and produce the special size door as customer’s requirement
**All above is the common cell diameter, for special size cell diameter no in list, customer would pay for the cost for the DIE of new size cell diameter. **All above is the common thickness size, It’s available to modify the thickness size as customer’s requirement.
An EMI honeycomb steel vent is a ventilation component designed to allow airflow while helping maintain electromagnetic shielding in RF shielded rooms, chambers, and enclosures.
EMI steel honeycomb vents are commonly used in the air-refresh systems of RF shielded rooms, microwave chambers, and RF shielding boxes.
The honeycomb structure acts as a waveguide, allowing air to pass through while attenuating electromagnetic signals and helping preserve the shielding performance of the enclosure.
Available cell diameters include 3.2 mm, 4.8 mm, 5.2 mm, and 8 mm, with special sizes available based on project requirements.
The standard thickness options include 12.5 mm, 25 mm, and 50 mm. Custom thicknesses may also be available for specific applications.
The DMC-HMB series is specified to provide more than 100 dB attenuation across frequency bands from 100 kHz to 10 GHz.
The selection should consider factors such as RF shielding requirements, required airflow, cell diameter, vent thickness, operating frequency, and installation location.
Yes. EMI honeycomb vents can be used in RF and microwave chambers where ventilation is required without significantly compromising the chamber’s electromagnetic shielding performance.
Yes. Custom cell diameters and thicknesses can be designed and produced based on specific customer requirements.
In addition to steel, honeycomb vents can be available in materials such as aluminum, brass, and copper, depending on the required shielding performance and airflow characteristics.