These linear LED bay lights hang from ceilings with enough space for the roughly 2-ft. long housing. They install in new lighting layouts or upgrade 2-ft. fluorescent installations to LED. They allow conversion to LED one fixture at a time to match the existing lighting layout and maintain a consistent look. LED lights use less energy and typically last longer than fluorescent lights, reducing maintenance and downtime. Bay lights deliver bright, uniform illumination from high ceilings or open trusses to floors and work surfaces below. They mount at greater heights than other types of overhead indoor lighting fixtures to illuminate warehouses, factories, gymnasiums, hangars, big-box stores, and other large, open spaces. Mounting height (high or low bay), height of the work plane (floor or elevated surface), light distribution (narrow to wide), and lumen output are key factors for selecting a bay light.