Specifications - 18W 4 pin 2G11 lamp CFL, DayLingt Color 6500K, brightness of 1250 lumens, 12000 hours of average rated life. 9.75" overall length. 2-pack.
Compatible: T18330, PL18-B-FFP, T24J3S-CA, 7T18CH-CE, T18330, T186C0, 7T18CH-SE, 7T18CH-UK, T40112, or OTL18TCB is marked at the base.
Compatible: All FPL bulbs up to 9.75 inches in length. 18 watt bulb by Electronic ballast.
Long Lasting: 12,000 hours or 10 years based on 3 hours of daily usage.
Good Service: Any question, please contact customer support for happy solution