![]() The LowE is what gives you the UV protection. If you see anything other than two or three, then post a message here and tell me what you are seeing. If you see three flames in reflection, and the "center" flame reflection is a different color than the other two, and the center reflection does not appear to be exactly centered between the two other flames then your windows do have a LowE coating. If you see two flames in reflection, then your windows don't have a LowE coating. Look at the reflection of the flame in the window and you should see either two or three flames in the reflection. When it is dark, hold a lit match or a lighter close to the glass in your window. But you can tell if your windows have a LowE coating, which is what you need to help block the UV energy. ![]() There really is no way for you to measure the amount of UV energy coming in thru your windows. If you have single pane, then you have no specific UV protection from the window. First, I am assuming that you have dual pane windows. ![]()
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