Color: Black Open/Close Sign – Privacy Slide Door Sign Indicator for Business Storefronts, Restrooms, Office Doors, Walls, Windows, Restaurants, Retail Stores, and Salons. Clear and eye-catching design with bold, legible text. One side features a red background; the other side features a green background—creating high visual contrast for maximum visibility. Magnetic and adhesive mounting options—use on magnetic surfaces or apply included tape to non-magnetic surfaces. Easy, tool-free installation. Made from durable aluminum with a high-quality acrylic inner layer. Lightweight, portable, and waterproof—more robust than plastic. Sliding mechanism allows quick, smooth transition between “OPEN” and “CLOSED” states. Simply slide horizontally to change the displayed status. Versatile use—ideal for shop doors, office doors, meeting rooms, home offices, dorm rooms, recording studios, public service buildings, and outdoor exhibitions. Clearly indicates room availability at a glance.