This is a branded 4ft 36w T8 Triphosphor Fluorescent Tube, providing reliable quality lighting to both domestic and commercial locations. An ideal replacement for T12 and T8 halophosphor tubes, the T8 gives you a brighter light for less wattage. The Triphosphour tubes also have a longer lamp life on average. Saving you money in the long run, the T8 Triphosphor lamp is an upgrade for the more outdated luminaires.