We normally love the black out shades, this is the third house we are putting them in.  This one specific on was different than the others and does not go up and down correctly.  I bought these while my house was being built and just now have put them up and missed the return window.  These were of lesser quality and harder to install than the others we bought for the house.  They seem to be very different.  I wish I could return them for something else.