The Honeycomb Fan Shield Series are designed to provide EMI shielding and maximum air flow without degrading the fan output.

These vents provide a low cost option to perforated metal when airflow rates are critical.

Holland Shielding Systems B.V. stocks Honeycomb Fan Shield in 5 sizes corresponding to industry standard fans with standard 4-hole mounting. See table for the standard sizes.

Sequential Number For Frame Size
#	Dimensions			Order Code
	B	A	D
0 1 2 3 4 5	1.57" 2.36" 3.14" 4.69" 5.00" 3.62"	1.26" 1.97" 2.81" 4.13" 4.45" 3.25"	.33" .33" .33" .33" .33" .33"	11 21 32 44 54 33

Shielding performance is achieved from 1/8 cell aluminum honeycomb panels mounted in high strength extruded aluminum frames with a beryllium copper fingerstrips for shielding the frame to the enclosure or an amucor shield.

Possible gasket solutions

Amucor Shield

BeCu Fingerstrip

Shielding Performance
Honeycomb Fan Shield

Performance have been measured with honeycomb specifiecations 1/8 Cell size, 1/4 Thick.

Honeycomb Finish	E-Field	Plane Wave
	10MHz	1 GHz	10 GHz
Iridite	70 dB	50 dB	30 dB

Dust screen
Dust screens consisting of multilayer expanded aluminum can be added, but airflow will be restricted.