These are lightweight, so they are easy to install. They block a lot of sun, but they also provide some light to come through. I wish they were a foot or so longer and a few inches wider for complete coverage of my glass doors, but other blinds in that size were a lot more expensive, so these are a nice compromise. Also, the directions say you should drill a hole to insert the screws in for hanging, but if you don't have a drill, you can use a hammer and nail instead. Hammer the nail in far enough for the screw and then pull the nail out and repeat.