100,000 Hours Rated Lifespan. 10-year Warranty. L80 > 78,000 Hours. Lightweight Aluminum Extrusion Housing (White). Prismatic Acrylic Lens. Highly Reflective White Coating. 1/2" Knock-out on Each Side and the Back. Optional Occupancy Sensor. Optional Emergency Battery Backup. Standard Surface Mount Ready. TAA/BAA Compliant.