Keystone 4' - 30/35/45 watt - 120/277 volt - 3,500K/4,000K/5,000K - White - CCT Selectable - Power Select - Ultrasonic Sensor - Dimmable | Keystone LED Stairwell Fixture (KT-SWLED45PS-4A-8CSA-VDIM-P 13245)