The IMPA 335815 Keep Locked Shut When Not in Use Mandatory Action Sign is an essential safety sign for marine environments. This sign serves as a clear and visible reminder for personnel to secure the designated area when not in use, ensuring the safety and security of the vessel and its occupants. Made from durable materials, this sign is suitable for use in harsh marine conditions and will remain legible for an extended period. Compliant with safety regulations, this mandatory action sign is a crucial tool for maintaining the highest standards of safety and security on board. Ensure compliance and enhance safety protocols with the IMPA 335815 Keep Locked Shut When Not in Use Mandatory Action Sign.