Great value. Block the light pretty well. However I measured exactly as instructed and purchased accordingly and going back I definitely would have ordered half an inch larger. They let in too much light around the sides. I went with the gray because I was afraid the white would let too much light in but I think I will order more for the nursery in the white. The gray has a bluish tint. Install was pretty simple. Took my husband maybe 30 min. They go up and down like a dream.