Keystone Technologies, KT-CLED40PS-S1-8CSB-VDIM-W, Canopy Fixture, Heavy Duty, 120 to 277 V, 40/30/50 W Lamp, 125 to 140 Lumens/W Light Output, 100000 hr Average Life, 3000/4000/5000 K Color Temperature, 80 CRI, 0 to 10 V Dimming Ballast, 5600/4200/2800 Lumens, IP65 Enclosure, Ceiling Mounting, Die-Cast Aluminum Housing Material, White Housing Finish, 3.6 in H x 8 in W x 8 in L Dimensions