This is the Osram DULUX D LED EM 7 W/840 EM. It has a lumen output of 700 and is direct replacement for an 18w Dulux D 2pin lamp. The colour rendering index is CRI 80 with a 4000 kelvin colour temperature (cool white). This lamp is designed to run off existing magnetic copper control gear and doesn\'t require any modifications to the existing fitting. The average lifespan of this lamp is 30,000 hours and is capable of 200,000 switch cycles. It is recommended that the magnetic ballast is checked prior to fitting to maximize the lamp life. Dimensions: L 147.5mm x D 34.5mm. Lamp warranty: 3 Years.