The standards behind the film

Window film is only as good as the way it's measured. These are the organisations that define how performance is tested, rated and described across our industry.

Every figure we publish — visible light transmission, UV rejection, infrared rejection, total solar energy rejection — only means something if it was measured the same way everyone else measures it. That's the work these organisations do: they set the test methods, maintain the terminology, and keep one manufacturer's numbers comparable with another's.

We report our performance data using the methodology the industry has settled on, so you can put a Spectrum spec sheet next to anyone else's and read it straight across. Below is who does what, and where each one touches automotive or architectural film.

Global bodies and standards

Southeast Asia

What sets us apart

Explore our pages on manufacturing and sustainability to learn more about what goes into every roll of Spectrum film.