We spent thousands of dollars for this??? We had Simonton windows put in our home about 6 yrs ago. 2 yrs later, one closure broke, then another. Still yet to be fixed! I guess I have to call the big guys. I've definitely noticed a change in the noise reduction, it doesn't anymore. When we first had them installed, we heard no traffic, outdoor noises. Not anymore. What's up with that? Has anyone else had these replacements long enough to notice any changes?