I highly recommend Green Eco to anyone interested in double-hung windows. I previously had 2 other companies install windows at my place of residence and their quality of window cannot compare to what Green Eco delivered. Salesman Elias was very knowledgeable. I received a quality product at a fair price. The product and workmanship with the installation left me extremely satisfied. I will be reordering more windows from Green Eco in the foreseeable future.