This is a Osram L58W/865 5ft 58w T8 fluorescent tube in colour 865 - Daylight (6500K). The Osram Lumilux 58w/840 T8 tubes are commonly used in linear fittings in schools, offices, shops or in the home. These tubes have an average life of 20,000 hours and a lumen output of 5000 lumens and are fully dimmable when used with a dimmable ballast. Wattage - 58w Lumens - 5000lm Colour Temperature - 4000K Dimmable? - Yes Cap - G13 CRI - >80 Osram Part Number: 4050300517933 Did you know you could reduce your energy consumption by up to 50% by converting to LED? You can see our LED equivalents in the related products tab below. For full technical specification see Data Sheet and select wattage/colour combo.