40w T9 G19q Circular triphosphor fluorescent tubes with 29mm tube diameter, This T9 has an average life of 10,000 hours. This 40w T9 Is identical to all market ......
You are viewing a 60w T9 Circular triphosphor fluorescent tube with a 29mm tube diameter. Average lamp life is around 10,000 hours or 10 years with average use.......