While old versions must leave some area for dissipation, which is not able to fully realize its efficiency. 480v high bay light is quite easy to be installed, just hanging the hook firmly. New design decreases light weight to make it much safety hanging over and additional safety rope will hold the light from being fallen off. The package must be in its original packaging and include all of the original accessories or items that came with it when returning an item.The item and package should be in original and perfect condition. Certified Safety LED Light Products. Ft production area &100 employees professional team. UL, cUL, cETL, ETL, DLC. Approved products standard produce by certified request. 6 separately production line strictly control quality & speed production. Professional Aging test machine&SMT Machine&IES test system&Reflow oven. Office Time: 9:30 - 18:30, Monday - Saturday (UTC+8). We will respond you within. Your feedback is very important to us, please leave us a. We try our best to reply to your emails as soon as possible, however, due to high volume of daily incoming emails and time zone difference; we may not be able to reply your emails immediately. This item is in the category "Home & Garden\Lamps, Lighting & Ceiling Fans\Chandeliers & Ceiling Fixtures". The seller is "ngtled" and is located in this country: US. This item can be shipped to United States.