This is a 600mm x 600mm Recessed Modular 1 x 55w PLL Fluorescent Tube Fitting to occupy 1 x 55w Compact Fluorescent PL-L Tubes, with all colours available from 3000k Warm White to 6000k Daylight. The Centre Louvre ensures there is minimal glare on computer screens, The fluorescent lighting module is ideal use within offices, commercial properties, schools, and other high-specification applications. The PL-L fluorescent lamp has a 4 pin 2G11 base. The lamp has an average life of 10,000 hours, which means it will last for many years without needing to be changed and has an B class energy efficiency rating. Please see related products for the 55w Compact Fluorescent tubes and emergency options.