This 18 watt low energy Osram D 2 pin compact fluorescent with a G24d base has a compact design and an integral starter for use with conventional control gear. The quality triphosphor coating gives this energy efficient compact fluorescent lamp excellent colour rendering. Please be careful choosing your lamp as you can only replace like for like wattages. 18W daylight lamp with 10,000 hour average lamp life Ideal where light is required for extended time periods such as offices, shops and hallways. Available in Warm White, White, Cool White and Daylight