Photoluminescent Signs: Reliable Egress and Safety Marking Solutions
When it comes to emergency preparedness, every second counts. That’s why photoluminescent signs and markings are a critical component of workplace and facility safety. Clarion Safety’s W4 material is designed specifically to deliver dependable, code-compliant visibility when it matters most — helping people quickly and safely locate exits, equipment, and egress routes during low-light or blackout conditions.
What Is Clarion Safety’s W4 Material?
Clarion Safety’s W4 is a rigid photoluminescent sign material, non-toxic and non-radioactive. This makes it a safe and effective choice for indoor safety signs, evacuation markings, and equipment identification. Unlike traditional signage that may fail in a power outage, W4 signage glows in the dark to provide continuous visibility, reducing risk during emergencies.
Key features include:
- Excellent water resistance for long-term indoor use
- Strong chemical resistance for industrial settings
- Service temperature range from 0°F to 140°F (0°C to 60°C)
- Stable storage and long expected indoor life
- Available in both standard and custom sizes
With Clarion Safety’s photoluminescent signs, you get a material designed to perform reliably indoors, giving your facility a safer, compliant edge during emergencies.
Standards and Compliance
Choosing safety signage isn’t just about visibility, it’s about meeting industry standards that protect both workers and facilities. Our signs that use our W4 material can help you meet:
- ANSI Z535.1-2022 Standard for Safety Colors
- UL 1994: Luminous Egress Path Marking Systems
- NYC Building Code RS 6-1 for egress safety
- ISO 17398 Safety Colors and Safety Signs – Classification, Performance, and Durability
Compliance with ANSI, ISO, UL, and local codes means our signage meets expectations and helps safeguard your facility against regulatory risk.
Best Uses for W4 Photoluminescent Signs
Because W4 is a rigid, glow-in-the-dark material designed for indoor applications, it excels in environments such as:
- Emergency exits and stairwells
- Equipment identification signs
- Egress path markings in offices, plants, and public buildings
- Facilities requiring UL 1994–compliant egress systems
Note: W4 is not recommended for outdoor or UV-intensive environments.
W4 is best deployed indoors in high-traffic or emergency-sensitive areas, ensuring people can evacuate quickly and safely when power fails.
Custom Photoluminescent Signs and Printing
We offer both in-stock photoluminescent signs and custom industrial printing solutions using W4 material. This allows you to tailor signage to your exact facility requirements, including:
- Custom graphics and hazard messages
- Unique sizing for equipment or narrow spaces
- Integration with existing ANSI Z535 / ISO 3864-2 compliant labels
- Reorder numbers included on labels for fast replacement
With our custom solutions, you can standardize safety communication across your facility while ensuring every label is tailored to your needs.
FAQs About Photoluminescent Signs and W4 Material
Photoluminescent signage provides visibility in low-light or blackout conditions, making it ideal for egress paths, emergency exits, and equipment identification.
Clarion Safety’s signage that uses W4 material meets ANSI Z535.1-2022, UL 1994, NYC Building Code RS 6-1, and ISO 17398, helping you to ensure compliance with key U.S. and international safety requirements.
Yes. Clarion Safety provides custom industrial printing with W4, including tailored graphics, sizes, and reorder numbers for easy replacement.
