Menene T8LEDtube haske?"T" yana nufin "tubular" (siffar kwan fitila) kuma lambar tana nuna diamita a cikin takwas na inch.T8 yana da diamita 1-inch (ko 8/8 inch), T5 yana da diamita 5/8-inch, kuma T12 yana da diamita 12/8-inch (ko 1-1/2 inch).