CR Series Architectural LED Troffer with Cree SmartCast Technology, Power Rating: 40 WTT, Voltage Rating: 120 - 277 VAC, 50/60 HZ, Lamp Type: 4000 LM 3500 K 90 CRI LED, Reflector Type: Textured High Reflectance White Polyester Powder Coating, 20 GA Steel Housing, Mounting: Recessed, 48 IN Length X 24 IN Width X 4.7 IN Height, Power Factor: 0.9 Nominal, Temperature Rating: 0 - 35 DEG C, Dimming: 5 PCT to 100 PCT, Cree SmartCast Technology: Integral Occupancy Sensor, Integral Ambient Light Sensor, Integral Wireless Communication, Efficacy: 100 LPW, C/US UL Listed, DLC Qualified, For Airport, Corporate Campus, Healthcare, Municipal, Restaurant And Hospitality, School And University, Retail And Grocery