3M’s Window Films Block Heat and UV Rays Without Dark Tint. Alex Nishimoto Writer May 13, 2011. ... With costs ranging from $500 to 800, installation of 3M's window films isn't exactly cheap.

3M Crystalline Automotive Window Films 40 used on ... where Crystalline 40 will block 60% of ... is the percentage of harmful UV light that the 3M Crystalline film prevents from entering the ...

Recognizing the need to protect the people and items that matter most, 50 years ago, 3M designed a Window Film that continues to deliver outstanding sun control, unparalleled comfort and UV ...

New 3M™ Thinsulate™ Window Film offers year-round energy savings and unparalleled comfort in any weather condition. Windows Media Video. Quicktime. MPEG-4 Video. Small. Preview. Thumbnail.

"All of our films, regardless of how light or how dark they are or how low-quality or how high-quality, are all 99% UV protection," said Sal Napoli, owner of Affordable Window Tinting.

According to 3M, its clear car window covering is actually a form of nanotechnology consisting of 200 layers of optical film stacked into a coating thinner than a Post-it note.

Most UV-blocking films work best when light hits the film at a 90-degree angle. But this isn't practical for window films, which receive light from the Sun at various angles throughout the day.