Often referred to as 2D, DD double turn or butterfly light bulbs, these energy efficient compact fluorescent CFL light bulbs are commonly used with low profile decorative and tough exterior luminaires in both domestic and commercial applications.The unique shape of these CFL 2D light bulbs provides even light distribution, while boasting an impressive a rated life of 10,000 hours and a typical lifespan of 5 years. This Crompton 16W 2 Pin Double D light bulb emits 1,100 lumens of cool white light and is perfect for use in offices, bathrooms and stairwells.Fitted with a GR8 2-pin square push fit base. Not suitable for dimming. Low Energy 2D style light bulb has 8000 hours rated life and uses 80% less energy than GLS. Equivalent to 79W. 2-Pin For full product information...