Works just great! Blocks out sun and really cools the rooms!!! I am happy that it is really so functional. There is one con - SMELL! And when i took it out of the package i did not notice it at first. But when i hanged it and the sun heated it then i realized that the strange smel that appeared was from these liners. So i put them out in the sun outdoors for some time to air out and then it became way better.