Double Curtain Track Where Can I Find Short Double Curtain Rods, 6" - 9"?

Where can I find short double curtain rods, 6" - 9"? - double curtain track

We have recently moved into a new house and my wife wants to hang curtains in close cooperation with shelves between the windows. I am not in a position to double curtain rods that are quite short and find I'm not the best for the people I am reluctant to do it. Has anyone a website or a business that offers this article?