Having installed the shutters, we can say the following - the fastening rollers are very bad, they are very dimensional, they almost retreat so much from the plane of the window that when closed, the light penetrates very strongly, very large gaps, just not really large. The fabric itself is of very poor quality, she wants to turn into a tube!!! That is, it does not weigh along the plane of the window and collapses vertically, practically increasing the already large gaps by 3-4 times, they reach 20 cm each. From both sides! It's just awful! I do not recommend it to anyone, it is better to buy in normal stores where you can actually see the sample and evaluate what you are taking, and not a pig in a poke. Moreover, there were not even screws in the kit, they save on basic things. Horror.