The MASTER TL-D Power Saver Set is a perfect solution for upgrading your existing lighting installation with a special TL-D lamp with an intelligent starter. It offers considerable energy savings while maintaining the same lighting level and a better light quality. More than 30% energy saving over standard T8 tubes.   Energy Comparison:    Philips Eco Tube 51W = 58W Standard fluorescent tube                                           Philips Eco Tube 32W = 36W Standard fluorescent tube Excellent lifespan average 12,000 hours. Helps to reduce CO2 emissions. Suitable for all indoor applications where savings need to be made due to high energy costs. Ideal for general lighting in offices, schools, hospitals, etc