ENERGY SAVINGS Lightdot LED high bay light gives out 150Lm/W, which helps you cut down the electric bill up to 80% instantly. We used high quality 5000K SMD3030 as light souce, Ra>85, Non-dimmable, perfect lighting for warehouse/workshop/barn/garage. ETL & USER-FRIENDLY The ETL Listed UFO high bay LED light is easily installed to the ceiling with built in hook and safety rope, also provides 3.3ft extension cord with US 3-prong plug for easy and direct 100-277V AC power sourcing. This will save you time and energy to work on other projects!Recommend install height at :20-40Ft. 2023 Upgrade Item & More Durable Commercial high bay LED light with 2023 upgrade mould and upgrade lens narrow down the space in middle, making the lighting output more uniform and no yellow spot, help focus light without any light loss as well. Perfect bay lighting for warehouse, workshops, exhibition hall, logistics center etc.