What is the difference between Bay Windows and Bow Windows?

Bay Windows consist of three windows in a single frame. The center lite is always twice as wide as the sidelites. Generally, Bay Windows are a combination of fixed centers, and two operable flankers (casements or double hung windows). Bay windows project out from the wall of a house 30 or 45 degrees. Bow Windows consist of 3,4 or 5 windows in a single frame. All of the windows are equal size, and are generally a combination of fixed centers and two operable flankers (casements or double hung windows.) Bow windows project from the wall of the house 15 degrees. Bow Windows are similar to Bay Windows, but the Bow's combination of windows has a more circular arch appearance. ... more