Keystone Technologies, KT-HBLED215PS-2C-OSC-8CSD-VDIM, Fixture, High Bay, 120 to 277 V, LED Lamp, 215/175/135 W Lamp, 155 Lumens/W Light Output, 50000 hr Average Life, 4000/5000 K Color Temperature, 80 CRI, 0 to 10 V Dimming Ballast, Frosted Lens, 32800/27700/22000 Lumens, Ceiling Mounting, White Housing Finish, 24 in L x 12 in W Dimensions,