Welcome To Hengshi (Langfang) Precision Machinery Manufacturing Co., Ltd.
EMI Shielded Honeycomb Vent | Stainless Steel Airflow Panel | Custom Sizes
Categories
Custom stainless steel honeycomb vents for EMI/RFI shielding and airflow control. Ideal for telecom cabinets, cleanrooms, and defense enclosures. Vacuum brazed. ISO certified.
Product introduction
EMI Shielded Honeycomb Vent
Stainless-Steel Airflow Panel | Custom Sizes for Demanding Enclosures
Why Engineers Choose Us
True 90 dB Shielding @ 1 GHz – Stop EMI/RFI before it corrupts mission-critical electronics.
Unmatched Airflow – Hexagonal 4.8 mm cells deliver up to 78 % open area, keeping cabinets cool without fans.
Vacuum-Brazed Integrity – Zero-void brazing bonds every cell for vibration-proof durability in telecom shelters and defense vehicles.
304 / 316L Stainless or Nickel-Plated Options – Fight corrosion in offshore, clean-room and desert climates.
Cut-to-Blueprint Manufacturing – Any frame, any gasket groove, any bolt pattern. From Ø50 mm inserts to 1000 × 600 mm panels.
Technical Snapshot
| Parameter | Standard | Custom Range |
|---|---|---|
| Material | 304 SS | 316L SS / Cu / Al + EN/Ni plating |
| Cell Size (A/F) | 4.8 mm | 3.2 / 6.4 / 9.5 mm |
| Core Depth | 20 mm | 6 – 50 mm |
| Shielding Effectiveness | 90 dB @ 1 GHz | Up to 100 dB with dual-layer core |
| Temp. Range | –55 °C … +200 °C | –70 … +250 °C |
| Finish | Brushed SS | Black anodize / Chem-film |
Third-party tests per IEEE-STD-299 & MIL-STD-285 available on request.
Typical Applications
5G & Edge Datacenter Racks – Maintain airflow, cut crosstalk.
Military Communication Shelters – Survive shock & sand while satisfying TEMPEST.
Medical MRI & EMC Chambers – Non-magnetic option prevents image distortion.
EV Battery Testing Rooms – Release heat yet block RF noise for stable data.
Proof of Performance
<div> <img src="/images/vent-bench-test.jpg" alt="Spectrum plot showing 90 dB attenuation of honeycomb vent" width="350"> <img src="/images/vent-telecom-cabinet.jpg" alt="Honeycomb vent installed on outdoor telecom cabinet" width="350"> </div>
Certifications & Compliance
ISO 9001:2015 • RoHS / REACH • UL 94 V-0 Gasket Options
Full COC & test report shipped with every lot.
Ready to Solve Your Shielding Challenge?
Send Your Drawing → We return a 3-D model & quote in 24 h.
Approve Prototype → Free sample in 7 days with vacuum-brazed core.
Scale Production → 100 pcs – 10 k pcs, global DDU shipping.
📧 bill.fu@hengshi-emi.com | 📞 +86 18810617194 | 🗺️ Live chat now
Early-Bird Offer: mention code VENT25 to save 25 % on your first tooling fee.
Your enclosure deserves quiet, cool reliability—let our honeycomb vents make it happen.
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Hengshi (Langfang) Precision Machinery Manufacturing Co., Ltd.
The company is located in the southern area of Gu'an County Industrial Zone, Langfang City, Hebei Province, with a registered capital of 14 million yuan and an area of 5,000 square meters.
Contact Us
No.1 Factory Building, No. 2 Tongda Road, High Tech Zone, South Industrial Park, Gu’an County, LangFang City, Hebei Province, China 065500