high bay lights. We are using the same cutting edge technology as all our LED lights. No ballast or SMPS are used. AC current direct on board the light fixture. Lighter weight because there is no ballast. Sleeker design because there is less material required to manufacture the fixture. Nano and optical lens technology. Our LED high bay lights are used to replaced high wattage high pressure sodiums, metal halites and mercury vapor fixtures. These high bay lights are produced with 120 lumens per watt. Highest in the industry. The best in efficiency. Most affordable.