The IMPA 335805 Keep door locked shut when not in use sign is a vital safety tool for any marine environment. This highly visible sign is designed to remind crew members and passengers to always keep doors locked shut when not in use, ensuring the safety and security of the vessel. The sign features clear and concise text with a universal symbol, making it easily understandable for individuals of all languages and backgrounds. Manufactured to the highest standard, this sign is durable and built to withstand the harsh marine environment. Ensure the safety and security of your vessel by prominently displaying the IMPA 335805 Keep door locked shut when not in use sign.