Love the windows, disappointed with the service. We had two double hung windows replaced. A screen was damaged during the installation. A replacement screen was ordered. When a service tech. brought the replacement screen it was the wrong size. Another replacement screen was ordered and delivered to our doorstep, unnanounced. When I called and left a message asking for someone to come and install the screen, I didn't get a return call. When I called again and spoke to their "service manager" he claimed no knowledge of the previous message and said he would have to talk to his boss about installing the screen they had initially damaged. Eventually, perhaps unwillingly, they came and installed the screen. The product is great, the service somewhat loosey goosey.