Shielding Vents 

4 corners of 4 different vents

Aluminium honeycomb ventilation panels are used in electronic enclosures where EMI shielding and heat dissipation are required. These are available in any size to suit your requirements with a choice of material thicknesses and frame profile. 



Cho-Cell (plated honeycomb aluminium)

Shield-Cell & Omni-Cell (shielded vent panels)

VIP (Viscous Impingement Vents)

Shieldscreen (3-layer mesh dust vents)

Stainless Steel Honeycomb Vent Panels

Steel & Brass Honeycomb Shielded Vents

Streamshield EMI Vents

A honeycomb vent is either a free-standing metallic alloy honeycomb or an assembly incorporating the honeycomb with other value-added features, such as: framing, plating, gasketing, filters, etc. These vents are typically incorporated into enclosures where EMI radiation or susceptibility is a concern, as well as where heat dissipation is necessary to ensure long-term assembly performance.

Application-specific performance can be changed by modifying the size and other associated features of the vent assembly. Design requirements such as (but not limited to): attenuation values, airflow rates and direction, corrosion prevention, durability, air particulate filtration and flame resistance can be achieved.

Honeycomb material selection:

  • Aluminium (single layer & unplated)

  • Aluminium (omni cell 2 layer & unplated)

  • Aluminium (single layer & tin plated)

  • Aluminium (single layer & E. nickel plated)

  • Brass (unplated)

  • Brass (plated)

  • Steel (plated)

  • Stainless Steel

EMI Shielding Honeycomb Vents can used in:

  • Military vehicles

  • Aerospace

  • Telecommunications & Satellite

  • Industrial computing

  • ATE enclosures

  • Electronic Warfare jammers

Frequently Asked Questions 

When would a shielding ventilation panel be required? 

To resolve immunity emissions coming from inside an electronic box/enclosure from open apertures/slots on the metalwork or generated by a fan incorporated into a side panel of your metalwork. 

Do you supply standard EMI vent sizes? 

EMI Vents are typically custom made to your dimensions or drawings. 

Can you double the honeycomb mesh sheet in a single EMI vent? 

Yes, and in a different orientation if required. Please email your drawings to to review and advise on. 

Is the honeycomb available in different alloys/metals?

Yes. Honeycomb is available in aluminium, brass, steel or stainless steel. 

Do you have any information/guidance on designing a shielded vent? 

Do you have a standard honeycomb cell size? 

We generally supply 3.2mm (1/8”) cell size honeycomb, although other sizes are available (MOQs may be required). 

How can I mitigate water ingress through a ventilation panel? 

We can supply vents with angled honeycomb. 

The environment I am designing my vent for will likely mean the vent may corrode and oxidise, what would you recommend to prevent this? 

We would recommend an Iridite NCP coating, this offers an excellent corrosion resistant barrier.