WM-RDF72 shielding window film

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 film layer on glass

32 dB — removes 99.937% of the incident power density (1 part in 1,585 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.

Construction

12 metal-coated layers on polyester carrier, 75 µm thick, water-activated pressure-sensitive adhesive, 72% light transmission, very light green tint.

Typical application

• Interior face of window glass
• Glazed doors and other level glass surfaces

What the figure does not cover

• Interior application on non-heat-absorbing glass only: applied to already-metallised solar-control glass, multiple reflections heat the pane and can crack it or break the edge seals
• The cut edge exposes the metal layers and has to be sealed, or the film corrodes inward from the edge
• 32 dB on the glass does nothing about the frame, the reveal or the wall around it, and the window frame needs separate shielding to keep the path closed
• Field arriving through walls, roof or floor is untouched, so a film alone rarely changes a whole-room reading much

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

• RF-attenuating window film

  A metallised film bonded to glazing, typically quoted at 20–35 dB, and usually the highest-value single intervention because glass is the dominant entry path for outdoor RF.

  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

• Shielding verification

  How to prove a shielding measure worked: identical instrument, position and source conditions before and after, reported in dB as well as in absolute units.

  Measurement protocols

Sources

1. woremor-rdf72 WM-RDF72 shielding window film — technical data — WOREMOR. manufacturer, link checked 2026-08-12.