400W, 4500K/5000K/5700K Linear High Bay Light. Constructed of a robust durable housing, high-transmittance PC diffusion cover, long-lasting led chips and energy-efficent LED driver, the commercial led high bay lighting fixtures ensure high performance for more than 50,000-hour of continuous use or 23-years when on every day for 6-hours/day. Up to 80% Energy Savings. The LED linear high bay light emits an extreme 60000 Lumens of premium LEDs with 4500K/5000K/5700K adjustable color temperature. This fixture providing a high efficient and uniform lighting, no UV or IR radiation, no hum, up to 80% energy saving. With an enclosed power supply and covered optics, the LED high bay lights are designed for durability in commercial/industrial applications. With a beam angle of 120°, high efficency, made them become a perfect solution for those commercial areas where need bright lighting, such as garages, warehouses, gyms, manufacturing space and large retail spaces. These high bay lights can be easily hung to the ceiling with the included chains and V-hooks. Input Voltage: AC100-277V 50/60Hz. LED Type: SMD3030 LED chips with 150Lm/W. Operation temperature: -40°F (-40°C) – 104°F (40°C). 1X 400W Adjustable Linear High Bay Light. In 2021, our factory approve ISO9001 and also be honored as the high-tech innovation enterprise in China. (2) 60,000 square foot production area &120 employees professional team. (3) UL, cUL, cETL, ETL, DLC approved products standard produce by certified request. (4) 10 production line separately ensure fast production strictly control quality. (5) Professional Aging test machine&SMT Machine&IES test system&Reflow oven&Standard production line. Your satisfaction is our priority! If it’s economy service, you may upgrade to UPS Ground during checkout. And you may also upgrade to UPS-2 Day or UPS 3-day Selected for most of the products. Please be noted that, this service is more recommended for Monday-Thursday orders. Orders on Friday may be processed on following Monday by UPS, according to UPS’s policy. Unhappy with the purchasing? We will try our best to help you solve any problem. If there is nothing wrong with the items, but you change your mind, you can return the items to us and must keep in the original box. Items damaged or missing parts when arrival? Please offer us the photo of the items you received with the package, we will replace it or resend. You are guaranteed by our 100% satisfaction on all products. For example, if the item a. Doesn’t match listing description b. Damaged or defective when received c. Missing spare parts d. Counterfeit or imitation goods. 9:30 – 18:30. Monday – Saturday (UTC+8). We will respond you within.