Keep your workplace safe and secure with the IMPA 335806 "To be kept unlock during working hours" sign. This durable and highly visible sign serves as a clear reminder to all employees and visitors to keep all designated areas unlocked during business hours for easy access and emergency situations. Made from high-quality materials, this sign is designed to withstand harsh marine environments, making it suitable for use in a variety of marine settings. Its bold and straightforward design ensures that it can be easily understood and followed by anyone on board. Ensure compliance with safety regulations and maintain a secure working environment with this essential safety sign.