Color: Black-Open Close Sign Open 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 red background on one side and other is green background. The difference between two colors makes it very conspicuous in the place. Quick changesThis sign is sliding door sign, one sign can show two states. Only put it in a horizontal position, the slider can slide easily to display open or closed smoothly and quickly. Multiple useSuitable for using in any shop door or office door or meeting room or home office or dorm room which want others do not disturb indoors working. Also fit for using in outdoor exhibition or recording room or public service buildings. By sliding the slider display can OPEN or CLOSED, simple and clear know the state of the room.