Quote:
Originally Posted by tdatk
Have you considered vertical blinds or curtains? You may regret the tint in the winter when you get the free heat from those same windows. Also, curtains act as an insulator as well.
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True you lose the free heat in winter, but according to the 3M product, the film acts as an insulator and helps keep the heat in, in winter time. I don't know how effective it is at that, but it's claimed as a selling point.