When the temperature soars, ordinary window glass just can’t handle the heat. And tinted glass spoils the view.  Cardinal Low E3 (Low E 366) , however, has been specially formulated to reject the sun’s heat without affecting the view. It lets more light in and keeps more heat out. So your home stays cool and comfortable. Cardinal patented Low E366 coating provides the ultimate in performance and clarity of all low E product.

What’s more, Low E 3 provides exceptional fading protection as well. It blocks 95% of the sun’s damaging ultraviolet rays (a leading cause of fading), so it will help your furniture, carpets, curtains and wall coverings stay beautiful for years to come.