Zuri - B (1X4) is a bottom open 1 feet by 4 feet luminaire used for clean room lighting application. The fixture is recessed into the ceiling. The body is made of CRCA material with white powder coating. The top is usually stainless steel finish. PMMA difuser is used for spotless and glare free light distribution. Electrical Input Voltage : 180 - 280 AC 50Hz Driver Type : Constant Current Driver Control : Switch / DALI / Analog Connection : Plug-in Type Pre-wired General Characteristics Appliance Class : Class 2 Ingress Protection : IP40 Photobiological Safety : RG 0 - No Risk Ambient Temperature : 0 to +50 C Luminaire : Housing Material CRCA - Powder Coated Environment : Indoor Mounting : Recessed Light Distribution : Direct Body Finish : Stainless Steel top Optics : Diffused Driver Mount : Integrated Thermal Management : Passive Cooling Light Source : LED Medium Power LED / LED Bulb : Binning 3 Step MacAdam : Luminous Efficacy : 95 Lm/W Color Temperature : 2700K / 3000K / 4000K / 5700K / 6500K CRI : 80 (Standard) 90 (Optional) Tunable LED (Optional) UGR : < 19 LED Life : > 50,000 hours Size And Wattage - 310X1210-30W-40W