Photoluminescent Exit Sign with Plastic Frame makes an effective, zero-maintenance solution for emergency egress. Zero-energy consumption eliminates electricity usage, contributes to LEED points and lowers operating expenses. No bulb replacements, battery changes, or ongoing maintenance required. Non-radioactive, non-toxic and recyclable. Self-powered design charges from LED, fluorescent, metal halide or mercury vapor light. Meets UL 924 that requires an exit sign to be legible and visible at 50 feet at the end of 90 minutes. Wall-mountable design allows for repositioning if egress paths change. Low-profile construction helps it fit in a wide variety of spaces.