A 58 Watt 5ft T8 (TLD) Fluorescent Triphosphor Tube which is highly efficient and will last for an average of 15,000 hours. T8 fluorescent tubes are available in five common colours: - Extra Warm White = 827 - Warm White =830 - Standard White = 835 - Cool White = 840 These competitively priced tubes are superb value and provide a bright, cool light ideal for illuminating area which require a high light output. These T8 fluorescent tubes have received over 50 positive reviews from our customers and come with super quick delivery. The fluorescent tubes come boxed in 25.