Color: Black - Open Close Sign, Open Closed Sign, Privacy Slide Door Sign Indicator for Business Storefront, Restroom, Office Door, Wall, Window, Restaurants, Retail, Salon Shops (Black). Clear and eye-catching design with bold printed text. One side features a red background and the other a green background, creating high visibility and clear status indication. Offers two installation options: can be placed directly on magnetic surfaces or attached to non-magnetic surfaces using the included adhesive tape. Easy to install without tools. Made from durable aluminum with a quality acrylic inner layer and a protective cover. Lightweight, portable, and waterproof, offering greater durability than plastic. Features a sliding mechanism that allows quick and smooth transition between "Open" and "Closed" states. Simply position horizontally to slide and change the display. Suitable for use on shop doors, office doors, meeting rooms, home offices, dorm rooms, and other spaces where occupancy status needs to be communicated. Also ideal for restrooms, recording studios, exhibition areas, and public service buildings. Provides a simple, clear way to indicate room status.