Nothing But LED's Retrofit Kit is excellent for existing fixtures. Save Money, Save Time, and Greatly Reduce Labor Costs! This excellent product is made in the USA, powered by a Meanwell driver, and has a built-in Sunon fan that helps keep them cool for increased longevity. Choose from our wide variety of wattage's to find the perfect retrofit street light for your business. With an efficiency of up to a 120 lumens per watt and an easy E40 base for easy screw in, you can't go wrong with these lights.