17 Watt, T8 730 Phosphor linear fluorescent bulb with Rapid Start and medium bi-pin base, 25 pack. Replaces GE F17T8/SP30/ECO, Philips F17T8/TL730/ALTO, Osram/Sylvania FO17/730/ECO
NoteAverage life under specified test conditions with lamps turned off and restarted every three hours. Lamp life is longer if lamps are started less frequently.