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The Difference is Clear

LoE-366 adds a third layer of clear silver coating that blocks even more solar heat gain and reflects more heat than LoE-270 while still allowing the light to stream in. LoE-366 provides the highest levels of year-round comfort and energy savings with a minimum of exterior reflectance, making it the perfect glass no matter where you live.



When the temperature soars, ordinary window glass cannot handle the heat. Using tinted glass spoils the view, but LoE-366 has been specifically formulated to reject the sun’s heat without affecting the view: it lets more light in and keeps more heat out keeping your home stays cool and comfortable. LoE-366 provides exceptional fading protection. 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.



During cold weather, the insulating effect of your windows has a direct impact on your room temperature. Typically, 75% of the exposed surface of a window is glass, and the temperature of the room-side of the glass directly affects the air temperature in the room. The better insulated the window glass, the warmer your room will be.

Inside glass and outside temperatures
In fact, the Efficient Windows Collaborative ( suggests that when glass surface temperature falls below 52°F, there is a risk of thermal discomfort. To maintain the best comfort during the winter, select a glass product that produces surface temperatures that will stay above this point during the coldest outdoor conditions.


The table below compares the room-side center of glass temperatures of four different glass types against two different winter conditions.


  -20º F +20º F

Single-pane, clear 31º
Double-pane, clear 37º 51º
Ordinary Low-E 47º 58º
LoE-366 52º 61º


The superior insulating capability of LoE-366 is a key factor in the construction of comfortable windows for cold climates. The dramatic comfort improvement from windows with warm glass surfaces also means the relative humidity of the indoor air can be controlled and maintained properly. Proper humidity levels (not too much, not too little) will improve comfort and promote a healthier living environment.



The special coating distinguishes desirable visible light from unwelcome UV and near-infrared rays (NIR). The result is the ultimate in solar heat control, fading protection and visibility.



4935 W. Le Moyne St.

Chicago, IL 60651






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Monday-Friday: 7am-4pm

Saturday: 7am-12pm