Realized after I purchased some colored sheers that they were almost too sheer, and I needed another layer of white sheers underneath and didn't want to purchase and re-mount a double curtain rod.  So, instead, I purchased these and they worked perfectly.  Side note:  I purchased 2 of them, and Wayfair accidentally only sent me 1.  I called them and they sent me the second one, right away, no questions asked.  Excellent customer service!