{
  "id": "materials:woremor-wm-hn60",
  "collection": "materials",
  "slug": "woremor-wm-hn60",
  "name": "WOREMOR WM-HN60 metallised netting",
  "summary": "Very light copper- and nickel-metallised polyester netting declared at 60 dB at 1 GHz with 0.2 mm mesh and 0.03 Ω square resistance, intended for insect screens, vents and equipment openings indoors.",
  "status": "verified",
  "lastVerified": "2026-08-12",
  "data": {
    "aliases": [
      "WM-HN60",
      "metallized netting"
    ],
    "manufacturer": "WOREMOR",
    "model": "WM-HN60",
    "materialClass": "shielding-mesh",
    "targets": [
      "radiofrequency",
      "elf-electric"
    ],
    "attenuation": [
      {
        "db": 60,
        "frequency": "1 GHz",
        "configuration": "single layer, flat sample",
        "quantity": "power-density"
      }
    ],
    "testMethod": "Manufacturer-declared at 1 GHz, measured to ASTM D4935-10 or IEEE Std 299-2006, with a screening report per material.",
    "construction": "Polyester netting metallised with copper and nickel plus a protective coating, 0.2 mm mesh, 50 g/m², 130 cm wide.",
    "thickness": "0.1 mm",
    "surfaceResistance": "0.03 Ω square resistance",
    "requiresGrounding": true,
    "application": [
      "Insect screens in frames",
      "Air outlets and vents",
      "Equipment and headphone openings"
    ],
    "limitations": [
      "Interior use only: the manufacturer restricts it to protect the metallisation from corrosion, which would degrade attenuation invisibly",
      "Needs a proper conductive seal to the surrounding wall shielding or frame; an unsealed edge leaks and can leave the installation no better than an ordinary fly screen at about 25 dB",
      "Copper and nickel coatings lose conductivity with abrasion and corrosion, and the loss is not visible",
      "A single declared frequency point is not a curve: aperture-limited materials fall off as the wavelength approaches the mesh size"
    ],
    "availability": {
      "vendor": "EMR Shielding Solutions",
      "url": "https://www.emrss.com/products/hnn60",
      "relationship": "owned"
    },
    "related": [
      "shielding:mesh",
      "quantities:attenuation"
    ]
  },
  "sources": [
    {
      "id": "woremor-wm-hn60",
      "title": "WOREMOR WM-HN60 metallised netting — technical data",
      "publisher": "WOREMOR",
      "url": "https://www.woremor.com/products/wm-hn60-shielding-fabric-metallized-polyester-netting",
      "kind": "manufacturer",
      "retrieved": "2026-08-12"
    }
  ],
  "links": {
    "self": "https://emfbase.com/api/materials/woremor-wm-hn60",
    "html": "https://emfbase.com/materials/woremor-wm-hn60",
    "markdown": "https://emfbase.com/materials/woremor-wm-hn60.md",
    "collection": "https://emfbase.com/api/materials"
  }
}