These Circular Fluorescent Tube were the very first fluorescent tubes which were not straight! They were also the first with Triphosphor filling that meant that lasted twice as long as any other fluorescent tube, it is no wonder they became so popular
Often used in hallways etc where they may be one for long periods they offer extremely long life and good economy
Just select the wattage and diameter which is the same as your lamp.
If your lamp is not listed please get in touch as we may still be able to find the lamp for you