We have lived in our house for 21 years this summer. It was definitely time to replace our single pane (scary) windows. With a neighbors' recommendation and several other neighbors planning to take the leap too, we scheduled new window installation. The work was carried out flawlessly. The crew was tireless, knowledgeable, well organized and meticulous about their work. I feel the house has a new "strength" and the profile is beautiful. Thanks for a GREAT product! PS Mike, the salesman is a gem!