This is a Osram L36W/840 4ft 36w T8 fluorescent tube in colour 840 - Cool White (4000K). The Osram Lumilux 36w/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 3350 lumens and are fully dimmable when used with a dimmable ballast.Wattage - 36wLumens - 3350lmColour Temperature - 4000KDimmable? - YesCap - G13CRI - >80 Osram Part Number: 4050300517872Did 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.