WOREMOR WM-HG10 stainless steel gauze

Declared attenuation

Each figure is the manufacturer's declaration for the frequency and the layer or coat count named next to it. The percentage is computed from the dB value, not quoted separately.

1 GHz, single layer, flat sample

40 dB — removes 99.990% of the incident power density (1 part in 10,000 gets through)

1 GHz, two layers

55 dB — removes 100.000% of the incident power density (1 part in 316,228 gets through)

Test method

Manufacturer-declared at 1 GHz, measured to ASTM D4935-10 or IEEE Std 299-2006, with a screening report per material. Fire classification A1 to DIN 4102:1994.

Construction

Woven V4A stainless steel, 1.0 mm mesh width, 0.16 mm wire, 70% open area, 260 g/m², 90 cm wide.

Typical application

• Interior and exterior use under plaster
• Roof areas and drywall
• Insect screens over openable windows

What the figure does not cover

• 15 dB below the finer WM-HG03 at the same frequency: the larger aperture is the cost of the 70% open area
• Two-layer figures require both layers bonded and offset; simply laying a second layer loosely does not reproduce the declared 55 dB
• Requires grounding for low-frequency electric fields and correct bonding because the material is highly conductive
• The number is a flat-sample laboratory value, not a prediction of what a meter will read in a finished room

What these figures are

Every attenuation value on this page is the manufacturer's own declaration for a flat sample in a test fixture, reproduced so that products can be compared on the same terms. It is not a regulatory limit, not an independent test, and not a prediction of what a meter will read after installation — an installed shield is set by its weakest path, so the only figure that describes a room is a before-and-after measurement of that room.

Where to buy

Related records

• Metal mesh and expanded-metal screen

  Woven or expanded metal used in wall build-ups, vents and window screens; attenuation depends on aperture size relative to wavelength, so a mesh that works at 900 MHz can leak badly at 5 GHz.

  Shielding & remediation

• Shielding attenuation

  Decibels of field reduction provided by a material. Every 10 dB is a factor of 10 in power density: 30 dB removes 99.9%, 10 dB removes 90%.

  Quantities & units

Sources

1. woremor-wm-hg10 WOREMOR WM-HG10 stainless steel gauze — technical data — WOREMOR. manufacturer, link checked 2026-08-12.