It has been a year now since we had the Marvin Bay Window installed in our kitchen remodel so it has tested through the summer and winter months. We really have enjoyed our new window and are happy with our decision. We are very pleased with the service which we received. Our salesperson helped us through the process of what we needed and right through our installation. We could always depend on him being here at the exact time we had scheduled. He was a pleasure to work with. Our installer also did a very good job and we were very happy with the way in which this bay window was installed and how it looks from the outside also. It looks like it was always a part of our house. We wanted to let you know that we do not hesitate in recommending Chicago Lumber (Marvin Windows) to others.