The flexible curtain rod for arched window is bold and unobtrusive. You can find clear and different metal finished. The rods are found in different sizes and they fit different types of curved windows. The arch-top is a window with straight sides or curve at its top. Bow windows are also called circular bay windows and they have a curve outwards on the room. The arched rod has the benefits of following up the curved lines in order to enhance the architectural details of the room. The rods are found in different sizes and they are flexible with the hardware which holds them into the arched shape. The vendors which specialize in the drapes and curtains may sell the arched rods in decorative or plain styles.