A 60 Watt T5 Circular Fluorescent Tube. This T5 Circular lamp has an average life of 12,000 hours and has a B class energy efficiency rating. T5 circular lamps are available in colours: - Warm White = 830 - Cool White = 840 General Characteristics Wattage [W] 60 Voltage [V] 230 Lumens [lm] 5000 Cap/Base 2GX13 Bulb Shape Circular Bulb Diameter [mm] 373mm Colour Rendering Index (CRI) [Ra] 82 Rated Life L7 [h] 12000 Dimming Capability Yes