The total width needs to be measured internally from frame edge to edge. In addition, each window unit needs to be measured internally one by one; measure the width of A-B, B-C and C-D. Also measure angles 1 and 2, shown below. Lastly, the height of the windows also needs to be measured.
3-segment Bay Windows
The measurement of a 3-segment bay window
Styles
Bay windows offer a large number of configuration options and styles. Your bay windows can consist of casement, tilt and turn and sliding sash windows.
To decide which style of bay window would perfectly fit your home, browse our window styles below.