t5 22w circle tube 1.1500lm, class A,10,000h 2.CE/RoHS Compliant 3.ballast inside, E27 4.outside diameter:185mm t5 22w circle tube1.1500lm, class A2.CE/RoHS Compliant3.with ballast (inside)4.outside diameter:225mm5.Lifetime:10,000h6.Switching:10,000 on/off time7.CRI>808.PF>0.559.powder: tri-fluorescent powder10.lumen maintence at 2000h:>0.8511.Warm up time to 60% lumen output: <40s