The Sylvania LED/HIDR/5000/840/CONTRACTOR 4000K LED Corn Bulb is a high-quality lighting solution suitable for both indoor and outdoor use. This 4-pack of bulbs provides a clear white light with a color temperature of 4000K and 5000 lumens of brightness, making it ideal for high/low bay lighting applications. The energy-saving bulb is dimmable and has a wide beam angle, featuring COB technology for efficient performance. Made of aluminum and glass, this LED bulb has a long lifespan of 35,000 hours and is Energy Star rated for energy efficiency.