In February 2023 we had all the windows and doors replaced in our home. 29 windows and 3 sliding glass doors. We chose the Lastech window over all the others because of the quality of the product! The installers were absolute craftsmen as our home is old and had to retrofit every window. The crew was courteous and kept everything very clean and tidy. My windows are beautiful and my home is much warmer this winter. Also, during the summer I didn’t need the air conditioner as much as the windows kept the heat out as well. Finally, they were much better priced than most of the other manufacturers..