Brightness: 850 Lumens

Estimated yearly energy cost: $2.41 (based on 3-hours/day， 11c/kWh， cost depend on rates and use)

Lasts up to 21.9-years (based on 3-hours/day)

Light appearance: 5000K (daylight)

Energy used: 20-Watt

Lumens per watt: 42.5

T12 bulb shape， medium bi-pin base

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

For indoor， commercial and residential use

Ideal for use in living spaces in need of simulated natural daylight

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