Brightness: 2100 Lumens

Estimated yearly energy cost: $2.53 (Based on 3 hrs/day， 11c/kWh. cost depend on rates and use)

Lasts up to 18.2 years (based on 3 hours/day)

Light appearance: 3000K (Bright White)

Energy used: 21-Watt

Lumens per watt: 100

T5 bulb shape， miniature bi-pin base

Contains mercury: yes (for more info on cleanup and safe disposal， visit: epa.gov/cfl)

Ideal for residential use in kitchens and bathrooms as well as for commercial use in general， decorative and architectural lighting

Contains mercury: yes (for more info on clean-up and safe disposal， visit: epa.gov/cfl)

Based on availability， color temperature on packaging may vary between soft white and bright white， but all lamps will provide the same color temperature output of 3000 Kelvins.