Crompton Lamps Halogen 118mm Linear 400W R7s Dimmable Warm White Clear Energy Saver

This 400W version of the K1 Halogen linear tube gives out the same amount of light as a 500W but at the same time saving 20% off the electricity costs. It has an increased life of 2000hrs, the light bulb also runs at a slightly lower temperature therefore giving a longer fixture life. Fitted with R7s round (7mm) caps to each end. Commonly used for floodlight replacement light bulbs.

Price: 2.09 from Lightbulbs Direct