Neonetics Neon Signs feature multi-colored, hand blown neon tubing. The Don't Tread on Me neon sign has bright green, white and yellow neon tubes, and measures 24 inches wide by 24 inches tall. 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. Neonetics 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.