blinds

Flexible or removable devices used to obstruct or regulate vision or light consisting of horizontal or vertical slats that can be opened or closed, often with the angle of the slats adjustable to admit varying amounts of light. For blinds permanently affixed to buildings, use "shutters." For assemblies of adjustable blades, slats, or baffles, use "louvers." Prefer "shades (coverings)" for flexible screens, usually of paper, cloth, bamboo, or similar materials and sometimes mounted on a roller, used to obstruct or regulate vision or light.