Low Solar Gain Low-E Glass: 366
Cardinal LoE-366 glass is the ultimate performance glass. LoE-366 delivers the ideal balance of solar control and high visibility. It’s also the one glass you can use to be compliant in every ENERGY STAR zone – in a double-pane window. Couple it with LoE-i89, and you’re compliant in the North. Its low SHGC makes it compliant throughout the rest of the country as well.

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