40W 4000K 3320 lm 10,000 hrs A Rated 2G11 4 PinSingle Turn L CFL LampGlass constructionNon dimmableTechnical SpecificationNominal Wattage: 40WRated Wattage: 40WAverage lifetime hours: 10,000 hrsNominal useful luminous flux: 3320 lmRated luminous flux: 3320 lmLuminous efficacy (Lm/W) in 50Hz operation: 83Rated lamp Lumen maintenance: 2000hrs: 92%, 4000 hrs: 86%, 8000 hrs: 83%Rated survival factors: 2000hrs: 100%, 4000 hrs: 100%, 8000 hrs: 90%Lamp dimensions: 535mm x 45mmCap type: 2G11 4 PinLamp Mercury content to an accuracy of 0.1mg: ≤2.5mgColour rendering index Ra: ≥80Colour temperature: 4000KAmbient temperature required to achieve maximum luminous flux: 25°CIs this product dimmer compatible?: NoLumens per watt: Up to 83 lm / WWeight (kg): 0.171TSI Code: 399441312Technical Specification:Colour Temperature: 4000K Wattage: 40W Lumens: 3320 lmWeight: 0.171Kg