EMF / RF Measurement and Mitigation Specialists
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Signal Protect - Clear Film
Product #: SLT-1053

Virtually Clear Radio Frequency Signal Protect Window Film - Transparent RF window shielding / glass shielding to block a wide range of radio frequency and microwave radiation - 10 Year Warranty!
What is a Linear Foot?
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Sold per linear ft in 3, 4 or 5 ft widths @ 5 ft increments (1 continuous piece)

Min Qty = 5 linear ft  or (5 feet length X roll width) 

Signal Protect Clear, formerly SLTWF1 is the key to high performance windows and keeps your building safe, new and cool. This film is virtually undetectable on your windows but provides a Radio Frequency barrier as well as keeping your home cooler and more comfortable while protecting your décor

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.


The ultimate protector that provides an unaltered view of the outdoors while keeping your home naturally cool, new, bright, and enhance its value.


  • Best light transmission 72 %
  • RF shielding performance 99.99 %
  • Low reflectivity maintains the original appearance of your glass
  • Not noticeable from the inside or outside
  • Provides security from breaking glass
  • Excellent solar heat control blocking 55 % of total solar energy
  • Lowers summer time cooling expenses
  • Blocks +99 % of Ultraviolet “UV” rays
  • Blocks +95 % of Infrared “IR” rays
  • Provides a partial deterrent to premature skin aging and some potential skin cancers
  • Provides privacy, RF Eavesdropping protection and IR Eavesdropping protection, and security for wireless networks
  • Suitable for Government Agencies
  • Application: Self adhesive, activated by water
  • 10 Year Warranty

Trusted by EMF Professionals throughout the Globe


Supplied With:
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)

Full Rolls are 100 ft long

SLT Name

Clear Glass

Signal Protect Clear - SPCWF








1/8 Inch Clear

2 mil (8mil optional)




RF Power Attenuation



Blocking Power @ 1 GHz

0 dB   0 %

-33 dB    99.949 %

Blocking Power @ 2 GHz

0 dB   0 %

-38 dB    99.984 %

Blocking Power @ 10 GHz

0 dB   0 %

-28 dB    99.841 %




% IR Light Blocked



% UV Light Blocked



Total Solar Energy Rejected






Visible Light



% Transmittance

90 - High

72 - High

% Reflectance Exterior

9 - Low

9 - Low

% Reflectance Interior

9 - Low

9 - Low




Available Widths


3, 4 and 5 feet

Minimum lengths


5 feet

Additional length increments


5 feet

Cutting and rolling fees


$15.00 CAD

Conversion  1 m² = 10.76 ft²






Clear Window Film Spec. Sheet
Shielding results for Signal Protect Clear Window Film at various frequencies.
Procedure for installing Clear or Silver window film.
Window Film Installation Video