This is a 13w Dulux D/E compact fluorescent from Osram in a 3000k Warm White colour and G24q-1 cap type. The double turn compact fluorescent lamps are a replacement for incandescent lamps offering a higher efficiency and great energy savings. These types of compact fluorescent is perfect for shallow downlights and are often used in public buildings, offices, shops, supermarkets, hotels, restaurants and around the home. The 4 Pin versions are designed primarily for use with high frequency ballasts or in emergency lighting applications. The 13w Dulux D/E boasts a 900 lumen output and a 12000 hours average lifetime. General Characteristics Wattage 13w Pins 4 pins Shape Quad Tube – 2 loops Lamp Base G24q-1 Colour 3000k – Warm White Equiv Wattage 75w Incandescent Lifespan 12000 hours Lumens 900 lumens Length 131mm Diameter 34mm