Vertical blinds allow one to direct sunlight to one side of the room or the other. Vertical veins rotate back and forth to give privacy where wanted. Vertical vein materials include wood, cloth, PVC, aluminum, and cloth with PVC backing for total blackout and privacy. Vertical blinds traverse to the side like a drapery giving a clear opening when desired. Verticals blinds are an affordable way to cover large expanses of glass.