Open/Closed Signs... Large, easy to read sign face in bright fade resistant colors make sign visible near or far. Special translucent material makes sign almost glow at night. Exclusive "Easy Glide" Message Board slides to display "Open" or "Closed" message. Sign includes 2 upper case fonts of 3/4" changeable letters, numbers and symbols (360 characters) in colors coordinated to match sign face.  Four large, heavy duty suction cups hold on any window.  High quality molded parts insure long life and durability.