The Lithonia Lighting 4-foot Flourescent Shop Light has built-in PVC insulation, is a metal flush-mount body, and is ready for hanging installation. Requires a pair of flourescent T8 bulbs (sold separately). About Lithonia Lighting For more than 60 years, Lithonia Lighting has provided the industry's broadest line of commercial, industrial, institutional, and residential fixtures. They specialize in providing quality products and excellent service - attributes evident since the company's inception. Such commitment to excellence has made Lithonia Lighting one of the most specified and recognizable names in the business. Industrial-style utility fluorescent flush mount. Constructed from high-quality metal. PVC insulation to protect from shock. Requires (2) fluorescent T8 light bulbs (not included). Dimensions: 7W x 2.75D x 49H inches.