SuperTube™ is a GamTube™ with a first layer (closest to the lamp) of UV filter and a second layer of GamColor. The UV filter helps to extend the color life expectancy by filtering out the high UV content of the fluorescent lamp. SuperTube™ effectively doubles the life expectancy of a standard GamTube™ in the same situation. In an installation where we would expect one year of color life, the SuperTube™ would double it to two years. SuperTube™ is recommended to minimize maintenance frequency.