Enclosed, dual letterboard lets you easily display your message. Shatter-resistant, hinged doors feature disc tumbler locks to secure your listing or announcement. Attractive letter panel with precision grooves offers easy letter insertion and provides a long-lasting background for your messages. An included set of 3/4" letters, numbers and characters can be easily updated for quick changes. Vinyl letter panel, weather-resistant backing and durable aluminum framing protect the letterboard from outdoor hazards.