Inital Lumens: 3200 Mean Lumens: 2690 Base Type: GX24q-4 (4 Pin) Average Life Hours: 12,000 4100K Color Temperature Item: Plug-In CFL, Overall Bulb Shape: PL, Dimmable: Yes, Wattage Equivalency: 150W INC, Watts: 42, Bulb Base Type: 4-Pin (GX24Q-4), Bulb Shape: T4 PL, Light Appearance: 4000 to 4999K, Cool White, Max. Ov