These shades look good, but were the most difficult to install shades I have encountered.  I have been installing shades for over 30 years.  The plastic spring operated bracket would not release the spring if you tightened the bracket fully to the window, and you could not get to the bracket once the shades were up.  I spent a frustrating 2 hours putting up 3 shades.  I almost boxed them up and sent them back.  They are still sketchy as to whether they are going to stay up or not.  I have purchased other blackout shades on here with standard brackets that were easily installed.  These are NOT like those.  Prepare to be frustrated.