Which size kit should you buy?
Below are instructions how to measure for each window shape:
Arched windows, quarter circle windows - Measure the rounded part of the window only.
Eyebrow arch windows - measure not only the rounded part but measure the side legs of the window, too.
Octagon or hexagon windows - Measure all eight or six sides.
Circle or oval windows - Measure the circumference of the window.
Pentagon window - Measure the all sides except for the bottom.
Once you have the measurements, order the kit according to the rod size. If you need a smaller size the flexible curtain rod can be cut with a hacksaw. If you need a larger size you can combine more than one kit.