The disadvantage of arch windows is that they invite plenty of sunlight and air. To prevent this you have to spend extra on curtains or other arrangements.
Installing this window is a very difficult task so an experienced person is needed to install this window.
Due to the high height of this window, it cannot be installed on any other floor except the ground floor in a multi-story building.
This window has a fixed frame that allows light to enter but cannot be opened for air circulation.