“The Window Source replaced 4 windows and put in a door where window 5 was. What a difference it makes! Better light and less heat or cold leaking through. Installation was VERY professional; they were fast (windows in one day; door in another day) and cleaned up the area when finished. I LOVE my new double hung, triple pane, foam insulated windows and my door with blinds between the two panes of glass. I would definitely recommend them for any job you have.”