Solar energy reaching your Tesla's glass arrives as visible light, ultraviolet and infrared, and the infrared portion carries much of the heat you feel on your skin. Kepler's nano-ceramic films are engineered to work across that spectrum rather than relying on darkness alone, which is why a lighter Kepler shade is worth comparing against a darker film from another brand. Ask your installer for the published figures on the exact film and shade you are considering, and remember that visible light transmission describes light passing through, not heat performance. Ask a local tinter whether they carry Kepler film or can get it.
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