Shielded vent panels for ventilation and heating

Honeycomb vents are used to shield openings for heating and ventilation against undesirable electromagnetic waves.

The honeycomb vent panels are supplied in rigid aluminium frames, pre-drilled or with fasteners made to your specifications or flow drilled thread holes.

Standard and cross-cell version

If a very high shielding level is required, the use of cross-cell honeycombs is recommended. These are made from two pieces of 6.35 mm or 12.7 mm thick honeycomb within a single frame. The shielding performance will improve at the expense of slightly increased air flow resistance.


Shielding Performance

Frequency MHz	Mode	Attenuation dB
0.01	H-Field	45
0.1	H-Field	49
1.0	H-Field	51
1.0	E-Field	>100
10.0	E-Field	>100
100.0	E-Field	>>100
1000.0	Plane Wave	98
10000.0	Plane Wave	95
See Guarantee

In the table below some common types are specified to illustrate the required information. Hole diameter P is standard 3.5mm but it ca be delivered in any other size. Also available with screw apertures or inserts.

Standard Dimensions

Outer dimension		Mounting holes horizontal			Mounting holes vertical
A	B	no	D	E	no	F	G
150 100 200 125 250 150 300 175 350 200 400 250 300 600	75 100 100 125 125 150 150 175 175 200 200 250 300 300	2 1 3 2 3 2 4 2 4 3 5 3 4 7	40 50 20 20 30 25 30 40 40 20 30 30 30 30	70 - 80 85 95 100 80 95 90 80 85 95 80 90	1 1 1 1 1 2 2 2 2 3 3 3 4 4	37.5 50 50 62.5 62.5 25 25 40 40 20 20 30 30 30	- - - - - 100 100 95 95 80 80 95 80 80

We have 4 standard frame types. Zie pictures below.

Frame A

Frame B

Frame C

Frame D

Frame E

Click on the image to increase

Click on the image to increase

All honeycomb vents are made according to customers specifications, so ther are no standard part numbers. When ordering honeycomb vents, the following information should be provided: frame style, dimensions, quantity and gasket material.

The standard material for gaskets is an Endless gasket 8100 series, thickness 2-4 mm, depending on outer dimensions.