‎13.4 inches

Energy and Money Saving: This 21,485lm outputted LED high bay light can replace up to 600 Watt HID bulbs. Power saving up to 80% under the same brightness. Saving up to $632.36 in 5 years vs. its HID lamp equivalent, and it’s priced to enable payback at less than 10 months (based on 7 hours/day, 11 cents/kWh, may vary depending on rates and use).
Maintenance Cost Saving: UL Certified products ensure better quality, safety and reliability. The high bay light has an LED rate life of 50,000 Hours! Over 10 years! Not only will you save on energy but the longer life of LEDs will reduce maintenance costs too.
【2021 New Plus Design: Thin&Large】150W high bay light is the updated version of high bay light. The feature of Ultra-thin and borderless design increase its luminous area and Φ13.38in improve the heat dissipation of the light. As the first up & down UFO high bay light. It lights up your ceiling for a cheerful, positive effect.