Questions tagged [film]

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Do cheap window films really reflect/reject infrared?

I see online films sold for about 15 Euro/dollars for 50x300 cm that claim 70% visible light transmission, 90+% UV rejection and 50+% infrared rejection. Do these products actually work? Are there ...
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Is there a way to know that window film is what it's advertised?

Is there a way to know that you're getting the window film that you were told it'll be? E.g., if I'm interested in an 78% Visible-Light-Transmission ceramic film with 43% Total Solar Energy Rejection ...