G13 fluorescent bulb master tl d super 80 philipsthe master tl d super 80 fluorescent bulb replaces conventional tl d fluorescent bulbs with 26mm and exceeds these in regards to usage lifespan and light yield through its good colour reproduction index of ra80 super 80 light colours through 3 band light bulb and a nearly stable light current throughout the entire lifespan it is wonderfully ideal to be used in the office and industry or as basic lighting in business roomsfeatures very l