Fire Door Keep Locked Shut - Safety Signs by Caledonia Signs

"Fire Door Keep Locked Shut" discs are critical safety signs used to indicate that a fire door must remain both closed and locked when not in use. These are especially important in high-risk areas where fire protection and security must work together. The disc serves as a constant visual reminder that the door is not to be left open or unlocked, helping to maintain the integrity of fire compartments and prevent unauthorised access.

You typically find these signs on fire doors protecting plant rooms, electrical cabinets, storage areas with flammable materials, or any space where both fire containment and security are essential. The message is clear: this is not a general access door and must remain locked shut to fulfill its safety role. These discs are often used in commercial buildings, hospitals, industrial facilities, and apartment blocks—anywhere where fire and security risks intersect.

Compared to standard plastic signs, these discs are made from metal, making them heat-resistant, durable, and compliant with fire safety regulations like BS EN ISO 7010. The fire door disc is designed to stay intact and legible under extreme conditions. Moreover, these discs are mechanically fixed (screwed) to the door, which makes them more secure and tamper-resistant than adhesive plastic signs. Their consistent design and placement help users immediately recognize fire safety instructions.

Materials Explained

Below is a more detailed description of the materials this particular safety sign is available in. Helping you decide which sign option is most suitable for your application.

Anodised Aluminium: A fully recyclable, premium material for signage, offering a combination of durability, aesthetics, and performance. A lightweight yet extremely strong material which won’t rust or peel. It is sleek, professional looking and has a smooth satin finish. A smart, 100% recyclable, sustainable option for environmentally conscious projects.