Everythingneon Neon Signs feature multi-colored, hand blown neon tubing. The Dad's Garage neon sign has red and green real neon tubes. The glass tubes are backed by a beautiful full-color image, and the entire sign is supported by a black finished metal grid. The sign can be hung against a wall or window; they can even sit on a shelf. The sign measures 24 inches wide by 24 inches high by 4 inches deep. Everythingneon neon signs have a warm mesmerizing glow, and are powered by industrial strength transformers, which operate silently and more efficiently than incandescent bulbs. All you do is hang it up and plug it in - no assembly or special wiring required. For Indoor use only.