We had our old aluminum frame windows and sliding glass door replaced and noted an immediate change during cold weather. The old aluminum frame windows collected condensation and which would then freeze. Our new Olympic window do not transmit the cold and hence don't collect condensation. The cold stays out! The Harley Team was very professional and the new windows and sliding door installation looks like they came with the house. In fact they look better than the original windows and door. It is so nice to be able to open all windows and sliding door without having to use brute force.
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