Signal Protect - Silver Film

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Purchased in 5 foot increments (QTY 3 = 15 linear feet). Shipped in one continuous piece on a roll.
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Signal Protect - Silver RF Shielding Window Film

Reflective Radio Frequency Signal Protect Window Film

*Rolls Do Not Include Free Shipping*

Installation should not commence if glass temperature drops below 40 degrees Fahrenheit or 5 degrees Celsius.

Silver tinted reflective RF shielding window film / glass shielding to block a wide range of radio frequency and microwave radiation.

This product offers light transmission of 22%.

Signal Protect Silver provides extraordinary solar heat protection which contributes to energy savings, preservation of décor and enhancement of building value.

Trusted by EMF Professionals throughout the globe.

Includes a 10 Year Warranty.

RF Shielding Window Film - Silver 

Signal Protect Silver, formerly SLTWF3 provides optimum solar energy rejection and radio frequency blocking power and keeps your building safe, new and cool.

This film is a silver tinted, reflective film which ensures a comfortable and temperate indoor environment and adds to the appearance of your building.

Designed to block analogue and pulsed digital signals for external sources such as microwave transmitters, cell phone towers, neighbours cordless telephones and Wi-Fi signals.


  • Best glare reduction and privacy
  • RF shielding performance 99.99 %
  • High reflectivity silver finish
  • Provides security from breaking glass
  • Excellent solar heat control blocking 76 % of total solar energy
  • Lowers summer time cooling expenses
  • Blocks +99 % of Ultraviolet “UV” rays
  • Blocks +90 % of Infrared “IR” rays
  • Provides a deterrent to premature skin aging and some potential skin cancers
  • Provides privacy, RF and IR Eavesdropping protection, and security for wireless networks
  • Suitable for Government Agencies
  • Application: Self adhesive, activated by water
  • 10 Year Warranty


Desired Amount of Window Film

Technical Data:

  • Sold per linear ft in 3, 4 or 5 ft widths @ 5 ft increments
  • Min Qty = 5 linear ft or (5 feet length X roll width) What is Linear Foot?
  • Full Rolls are 100 ft long

Installation Weather Guidelines – Interior Film

The main concern with installing film at temperatures below freezing would be that any water left behind during installation would freeze and cause a visible defect in the film. Thus the best method for reducing any potential problems would be to take extra care to remove all excess water during installation. The only way that the water could potentially freeze would be if the temperature of the interior pane of glass dropped below 32 ̊F. Below are a few recommendations to look for when installing in cold temperatures.

As a general rule these guidelines would be recommended any time temperatures are expected to be under 10 ̊F for double pane glass or under 40 ̊F for single pane glass, within 72 hours of the installation period.

  1. Check the temperature of the interior pane of glass, with an understanding that the temperature of the glass will drop significantly at night. If the temperature of the interior pane is less than 40 ̊F do not install film.
  2. Spray the glass with film mounting solution if the mounting solution freezes do not install film.
  3. Use a temperature gun to determine the temperature of the frame of the window right next to the glass. Water left around the edges of the glass could freeze due to the frame
  4. Check to see if heating vents are directed at the glass and will hold that glass at a warmer temperature, often allowing film installation at significantly lower outside temperatures.
  5. Determine what temperature the building is kept at during the night. Often unoccupied spaces, or spaces being renovated will be kept at much lower temperature, as are some buildings that utilize temperature setbacks at night.

In general, there are very few days that would prohibit film installation in the US climate. The interior temperature of the building will typically hold the interior glass temperature above 32 ̊F. The above are situations to be aware of, as well as suggestions to minimize the risk of installing film in temperatures that are too low.

2 mil
RF Power Attenuation @ 1 GHz:
-34 dB, 99.96 %
RF Power Attenuation @ 2 GHz:
-32 dB, 99.93 %
RF Power Attenuation @ 10 GHz:
-34 dB, 99.96 %
% IR Light Blocked:
% UV Light Blocked:
Total Solar Energy Rejected:
Visible Light - % Transmittance:
22 - Low
Visible Light - % Reflectance Exterior:
45 - High
Visible Light - % Reflectance Interior:
43 - High
Available Widths:
3, 4 and 5 feet
Minimum Lengths:
5 feet
Additional Length Increments:
5 feet
1 m² = 10.76 ft²

5 Reviews

  • 5
    Very Good and Effective. Reasonably priced.

    Posted by Teresa Vosper on 23rd Jan 2023

    I regret not purchasing more and will do so.

  • 5
    Very Good and Effective. Reasonably priced.

    Posted by Teresa Vosper on 23rd Jan 2023

    I regret not purchasing more and will do so.

  • 5
    Signal Protect

    Posted by Dr Val Fiott on 25th Sep 2021

    I am thoroughly impressed with SafeLivingTechnologies as a company, as well as their brilliant Signal Protect product. This couldn;t be easier to cut and administer, and it WORKS! Thank you so much.

  • 5
    Signal Protect Silver Film

    Posted by Sharon on 30th Jun 2021

    Love it. It took me about an half hour to install this product on the glass. After its installation, I could feel the difference right away as far as its emf blocking properties. Instructions were well written and easy to follow. I will be purchasing more of this film from this seller.

  • 5
    Great window protection

    Posted by Valerie Bergquist on 9th Feb 2021

    Great product! I was worried this film would decrease the sunlight in my kitchen, but it didn’t. It’s still bright and sunny- but feels much calmer w the emf protection.