Intelligent films, often called switchable films, use know-how to change their transparency at the touch of a button. The Photo voltaic Heat Gain Coefficient (SHGC) is often a measure of the level of photo voltaic heat that passes via a window. A value of one signifies the utmost volume of https://thejillist.com/story9040580/an-unbiased-view-of-window-tinting-films