Lithonia Lighting LQM S W 3 R 120/277 EL N M6 Quantum Thermoplastic LED Emergency Exit Sign with Stencil-Faced White Housing and Red Letters with Nickel Cadium battery LED EMERGENCY EXIT Light fixture with Ni-Cad battery back up that automatically recharges after providing up to 90 minutes of emergency lighting EXTREMELY BRIGHT LEDs and 6" high letters with 3/4" stroke are visible from up to 100 feet away which meets UL924 Standards ADJUSTABLE OPTIONS: LED Emergency Exit fixture comes with easily removable chevrons for directional indication and extra face plate to convert to double face HIGHLY RATED FOR MULTIPLE LOCATIONS - UL and damp location listed along with meeting UL924, NFPA 101, NEC and OSHA Standards. STRONG AND DURABLE Housing is made of impact and scratch resistant thermoplastic that will not corrode or discolor over time