Color: Black - Open Close SignOpen Closed Sign, Open Signs Privacy Slide Door Sign Indicator for Business Storefront, Restroom, Office Door, Wall, Window, Restaurants, Retail Salon Shops (Black)Clear and eye-catchingThe font is printed clearly, with a red background on one side and a green background on the other. The difference between the two colors makes it very conspicuous in the area.Magnetic and adhesive sticker selective useTwo installation options available, you can place it directly on any magnetic surfaces or use the attached tape to stick it on non-magnetic surfaces, making it easy to install and labor-saving, no tools needed.Portable and durableThis product is made of durable aluminum with a quality acrylic center, lightweight, portable, waterproof, and sturdier than plastic.Quick changesThis sign functions as a sliding door sign, allowing one sign to indicate two states. Simply position it horizontally, and the slider can smoothly and quickly display open or closed.Multiple useIdeal for any shop door, office door, meeting room, home office, or dorm room where you want others to not disturb the indoor work. Also suitable for outdoor exhibitions, recording rooms, or public service buildings. By sliding the indicator, it can display OPEN or CLOSED, providing a simple and clear understanding of the room's status.