Because of the dark, black tint that was described above, the film provides an excellent method of promoting daytime privacy. Even though the film allows some light to pass through, the darkness makes it difficult for unwanted eyes to see what’s happening inside. An important note, however, is that the effect of any reflective, privacy enhancing window film will greatly depend on the lighting conditions because the side exposed to more light will become more reflective and harder to see through. This is why the privacy-effect works so well during the day, and almost not at all at night since the sun usually makes the exterior of your building much, much brighter than the interior. However, coupled with the use of curtains or blinds for night-time privacy, the darkness this film provides is perfect for windows that face directly into the sun and are exposed to extreme sunlight!

Not only does the NA20 window film provide great daytime privacy, but its darkness also naturally gives it excellent heat rejecting properties that keeps the interior of your home or office building nice and cool. The number “20” in its name refers to the fact that it is rated to transmit about 23% of visible light. The classic, tinted look also helps block hot solar rays from entering through your window. Rejecting about 99% of the UV rays, it can help to reduce fading on your precious furniture or other UV sensitive belongings. By maintaining your room at a cool, moderate temperature, you can promote a more environmentally aware lifestyle by reducing energy usage and help create a greener world.