This is a Philips MASTER TL-D 30W/840, 3ft 30w T8 fluorescent tube in colour 840 - Cool White (4000K). The Philips MASTER TL-D Super 80 30w/840 T8 tubes are commonly used in linear fittings in schools, offices, shops, or in and around the home. These tubes have an average life of 20,000 hours and a lumen output of 2400 lumens and are fully dimmable when used with a dimmable ballast. Philips Manufacturer Number - 927920584023 Wattage - 30w Lumens - 2400lm Colour Temperature - 4000K Dimmable? - Yes Cap - G13 CRI - >80