Fully lit acrylic tubes suspended from the ceiling are available in 4 different diameters of 50mm, 75mm, 100mm and 150mm with varying height options of 150mm, 300mm, 450mm and 600mm. The tubes are glare free and spotless in light distribution and create a soothing and beautiful ambience. 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 : Acrylic Tube Environment : Indoor Mounting : Ceiling Suspended Light Distribution : Direct Body Finish : Powder Coated Optics : Acrylic Tube Driver Mount : Inside Canopy Cup Thermal Management : Passive Cooling Light Source LED : Medium Power LED Binning : 3 Step MacAdam Luminous Efficacy : 95 Lm/W Color Temperature : 2700K / 3000K / 4000K / 5700K / 6500K CRI : 80 (Standard) â?¥ 90 (Optional) Tunable LED (Optional) UGR : < 19 LED Life : > 50,000 hours Size And Wattage - 150-10W 300-15W 450-20W 600-30W