Lithonia Lighting 2 ft. White LED High Bay Light High-performance, 4000K LEDs produce 11,200 lumens over an average life of 60,000 hours Energy-efficient LED technology is 31% more efficient than T5HO fluorescent to help save money Frosted acrylic lens prevents glare and shields the LEDs Durable steel construction is built to last and finished in white enamel for a clean appearance 36 in. suspension mounting kit included (fixture not designed for surface mounting)