We have a very large window facing east, and it was letting in a lot of morning sun, not good for my furniture. I didn't want to drape the window, as it faces the patio and is a lovely view, so I got one of these. It was very easy to install, and it does a superb job of blocking morning heat and light without destroying the view outdoors. We just roll it up as soon as the sun is up and have our view and shady morning too!