THE BEST investment I have ever made! They installed simply and easily with two people.  This is my first time buying a double rod as the Rod in the back holds the sheers and the the one in the front holds my curtains well.  When the weather is appropriate, I leave the curtains closed and only have the sheets closed together all night. You get a great breeze and privacy is great. You get filtered light from outdoors at night yet no one can see in. These are a MUST HAVE! 
  My only question would be, can I buy different knobs or glass for the end of the poles just to change it up a little bit when I feel like it?