40 Watt T9 Triphosphor Circular Fluorescent Tube is ideal for indoor wall and ceiling lights and have a long life of 10,000 hours and low energy consumption.Available in Warm White and Cool White Colours:3000k Warm White and 3450 Lumens tube brightness.4100k Cool White and 3200 Lumens.Compact Fluorescent 2D bulb 40 watt.G10q 4 Pin Connector.10,000 hours average rated life.Energy Efficiency Rating A and CE approved.