In Case of Fire Break Glass Bolt to Open - Safety Signs by Caledonia Signs
- Caledonia Catalogue Page: 16
- ISO Compliant Safety Signage - wherever possible.
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Used to indicate that access through a particular door or emergency exit requires the activation of a manual release mechanism, typically by breaking a glass panel to release a security bolt or lock. This type of sign provides clear instructions for emergency use, ensuring that people know how to quickly unlock the exit in case of a fire or life-threatening situation.
Commonly used in secure areas of a building, such as warehouses, factories, stairwells, or restricted-access doors, where exits must remain locked under normal conditions for security or safety reasons. The sign is usually placed directly above or beside the emergency release box or the door it controls. It ensures that anyone in the vicinity understands that breaking the glass is both necessary and permitted during an emergency.
This sign helps ensure a swift and informed response during a fire. In some settings, emergency exits are equipped with internal bolts or electronic locks for security. Without clear signage, people might hesitate or be unaware of how to release these mechanisms. The instruction to "break glass" provides both permission and direction, reducing panic and delay when every second counts.
Comply with fire safety regulations by providing proper guidance near manual override systems. It is part of a broader fire safety system that ensures occupants can unlock and use emergency exits, even in areas that are normally restricted or secured. Proper placement and visibility of this sign contribute directly to safer evacuation procedures.
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.
Rigid Plastic: This lightweight, gloss white PVC is resistant to weather, moisture, chemicals, and general wear and tear, making it suitable for harsh environments. Its smooth, solid surface allows for crisp printing of text and graphics, enhancing readability and visual impact. Businesses who choose Rigid Plastic signs benefit from fewer replacements and minimal maintenance, making it a practical investment for reliable and effective safety signs.
Self-Adhesive Vinyl: Self-adhesive vinyl is easy to apply and it’s budget-friendly. Its adhesive backing allows for easy application to a variety of surfaces such as glass, metal, plastic, and painted walls, which simplifies installation and reduces setup time. Self-adhesive vinyl provides a clean, professional finish that suits many indoor environments including offices, retail, industrial sites, and vehicles. It is more affordable than many other material types and allows for custom shapes, colours, and graphics.

To achieve high performance in low light conditions and conform to ISO 16069 we recommend using Ultra Bright.
Ultra Bright Photoluminescent Rigid Plastic: Ultra Bright rigid plastic has a photoluminescent (glow in the dark) pigmentation which offers a highly effective, reliable, and energy-free visibility in low-light or blackout conditions, making them ideal for emergency exit applications. The afterglow properties exceed PSPA Class C grade, as measured to DIN 6751, provides razor sharp definition in blackout conditions.
Ultra Bright Photoluminescent Self Adhesive: Ultra Bright self adhesive vinyl is a flexible PVC with photoluminescent (glow in the dark) pigmentation. The self-adhesive backing enables quick, tool-free application on smooth, clean surfaces like walls and doors. The afterglow properties exceed PSPA Class C grade, as measured to DIN 6751, provides razor sharp definition in blackout conditions, making them ideal for emergency escape applications.
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Tags: 12043F, 12043U, 22043F, 22043U, 32043F, 32043U, 42043F, 42043U, Emergency, Escape, Fire, Exit, Directions, Directional, Rigid, Plastic, SAV, Stickers, Label, Self, Adhesive, Vinyl, Photoluminescent, Ultra, Bright, Glow, in, the, Dark