Burnt out in 3 months (24 hours a day, 7 days a week)
Average lifespan I don't know if it's 5000 to 6000 hours, I think it depends on how you use it. Mine blew up after 3 months 24 hours 7 days a week.
Pros
BL T8F10W The lamp is designed to last 6000 hours. For optimal performance, it is recommended to replace the lamps every 5000 hours (about 5-6 months).