Honeycomb Ventilation Panels

Honeycomb vents are used to shield openings for ventilation or acoustic/visual contact. We can make these vents according to your drawing within a few days, or you can use our standard range from stock.

We can supply Honeycomb vents with frames, pre-drilled with fasteners or with flow-drilled thread holes. The standard material is aluminium which can be given a nickel finish (or any other finish you choose).

If high shielding levels are required, the use of cross-cell honeycombs is recommended. These are constructed from multiple sections of 6.35mm or 12.7mm or 26.3mm thick honeycombs within a single frame. The shielding performance will improve as air flow is decreased, but not eliminated.

For military applications we make a heavy hot-dip galvanized mild-steel version. Please contact us for more information.

Honeycombs are also frequently used as flow straighteners to create a laminar flow.

Benefits

Light weight
High shielding performance
Low air-flow resistance
Reduction of turbulence

Options

Cross-cell honeycomb for extra high shielding performance
Slant honeycomb 30°, 45°, 60° for outdoor rainproof applications
45° degrees is the most common implementation Please note, slant honeycombs are available on request
Polyurethane filter for dust protection
Kick plate for mechanical protection
Stainless steel, mild steel or brass versions
Cell sizes 1.6mm, 3.2mm, 6.4mm, 9.5mm, 12.7mm, or 19mm (standard 3.2mm)
Gaskets for firm connections

Standard and cross-cell version

Approximately 95% of the honeycomb vents we produce are made to customer specifications.

Material specifications

Extrusion	Aluminium alloy 6063-T1 QQ-A-200/9
Filter media	Aluminium alloy 5056, per RR-W-365
Honeycomb	Aluminium alloy MIL-C-7438
Grilles	Aluminium alloy 3003-H-14 per QQ-A-359
Finish	Chem film to MIL-C-5541 Class 1A (standard) Also available: Bright tin, Electroless nickel or Chem film – Class 3
EMI (optional) / RFI gasket	Amucor shield 6800 or Knitted wire mesh.

Shielding performance (dB)

Frequency	Field	Single-layer 6.35 mm thick honeycomb material	Cross-cell 6.35 mm thick honeycomb material	Single-layer 12.7 mm thick honeycomb material	Cross-cell 54 mm thick honeycomb material
Frequency	Field	Frames B, C, D, G	Only custom frames	Frames E, F	Frame K
200kHz	H	39	71	78	85
100MHz	E	80	105	100	110
500MHz	P	55	93	55	95
2GHz	P	52	94	96	98
10GHz	P	61	82	80	90
These values were measured under laboratory conditions, Honeycomb 80 x 80 mm and with proper gasket material used. In other situations, results may differ. Please read our Guarantee.

Honeycomb ventilation panels Mild steel ventilation panels for EMP

Pannels made in different sizes and amounts made according your drawing

Honeycomb ventilation frame panel type h

Airflow characteristics

Shielding effectiveness

9520 – EMC Woven mesh ventilation panel
9500 – Honeycomb ventilation panel (1 layer 3.2 cell x 6.35 mm thick honeycomb)
9500 – Honeycomb ventilation panel (2 layers 3.2 cell x 6.35 mm thick honeycomb)
9500 – Honeycomb ventilation panel (1 layer 1.6 cell x 6.35 mm thick honeycomb)
9500 – Honeycomb ventilation panel (1 layer 3.2 cell x 12.7 mm thick honeycomb)
9500 – Honeycomb ventilation panel (1 layer 3.2 cell x 6.35 mm thick honeycomb + 1 layer 45° slant 3.2 cell x 6.35 mm thick honeycomb for water protection)
9500 – Honeycomb ventilation panel (1 layer 45° slant 3.2 cell x 6.35 mm thick honeycomb for water protection)

Please note : These values are measured under laboratory conditions. Results may vary in other situations; please read our Guarantee.

Mounting options

Honeycomb 400 x 400 mm single 3,2 mm cell 12,7 mm thick electric
Honeycomb 400 x 400 mm single 3,2 mm cell 12,7 mm thick magnetic
Honeycomb 400 x 400 mm cross 3,2 mm cell 25,3 mm thick electric
Honeycomb 400 x 400 mm cross 3,2 mm cell 25,3 mm thick magnetic