LF 1800 DUAL STEP LIGHT(Patented) Illuminates step edge,riser and tread with single lightstrip. Black stairnose made of durable PVC rated for extreme loads and heavy foot traffic. ADA compliant design (No trip hazard). Translucent window allows illumination from lightstrip to delineate step edge. Single lightstrip Light output complies with requirements of NFPA’s Life Safety Code ( 0.2 footcandles ) when installed as recommended Prismatic lens diffuses light onto riser and tread while eliminating glare. Snaps in and out for easy relamping.