Blinds are window coverings made of horizontal or vertical slats that can be adjusted to control the amount of light entering a room and to provide privacy. They are typically made from materials such as wood, metal, plastic, or fabric.Horizontal blinds, such as Venetian blinds, have slats that are stacked horizontally and can be tilted open or closed using a cord or wand mechanism. Vertical blinds have slats that hang vertically and can be drawn across the window or rotated to control light and privacy.