Solar heat arrives as visible light, ultraviolet and infrared energy, and infrared is the part you feel without seeing it. Kepler's nano-ceramic films are engineered to address that infrared component within the film structure, which is how a lighter shade can still work on heat. Because visible light transmission is separate from solar heat performance, the right way to judge a film is to compare the published specifications for the exact film and shade you are considering rather than assuming a darker film performs better. Your installer can walk you through those figures for your Tesla.
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