These were a little difficult to install and initially expand (one of the threads was caught on a ring and frayed a bit so I had to look over each of them to avoid that issue more times), but otherwise these shades were exactly what I wanted and needed. I have an office with a large window and was having trouble finding a single shade that wasn't plastic. I ended up ordering 2 of these because they fit my theme and were the right size (left ~0.5 inches between them in the middle to avoid them catching on each other) and they work perfectly. They are easy to raise and lower and block enough light so I can see my computer screen while allowing enough light to brighten up the room. Note that if you want to mount these on the wall, you will need to buy your own anchors (not included in the purchase).