The EXL2 Series LED Edge-Lit Exit Sign features a modern design, built with dependability in mind. The face is constructed using impact-resistant (optically clear) acrylic. Bright LEDs illuminate the exit sign with exceptional light distribution and quality. The edge-lit design saves space and reduces weight, making installation that much easier (considering it's usually done on a ladder). The EXL2 can be surface mounted from the top, back, or side of the base. Includes directional chevron arrows that can be added as needed. The EXL2 features an integrated nickel-cadmium battery to provide 90-minute emergency run-time if the power gets cut. Available in red or green lettering. Material: Aluminum.