Are your old 26W compact fluorescent bulbs due for replacement? Time to upgrade your downlights with Philips Corepro LED PL-C bulbs. These energy-efficient 4-pin based LED bulbs are ideal for use in general and easy to install throughout the building. Place these LED bulbs in corridors, halls, offices or other areas to create a good and safely illuminated surface. Not convinced yet? PL-C for yourself: These are the benefits of the Philips CorePro PL-C LED 9W 840: Energy savings of up to 70% High lumen / Watt efficiency High quality of light Rotatable end caps Instant 100% light / no flicker Efficient distribution of the light Up to 30,000 burning hours (3 times as long as a conventional PLC lamp) Lower maintenance and replacement costs Simple 1 to 1 LED replacement Free from harmful substances Environmentally friendly 4-pin fitting Four-pin fittings are often used in conventional ceiling fixtures such as downlights. Let's keep it simple. If your current bulbs have a 4-pin socket, make sure your replacement LED lighting also has a 4-pin fitting. By choosing the energy-efficient PL-C LED bulbs from Philips you can save up to 70% in energy! Long Lifespan and warranty The reliability of Philips lighting has been proven for decades. With a lifetime of 30000 hours, this is the perfect solution for years to come. That means, in an average business environment, it will last approximately 12 years (52 weeks per year, 10 hours a day from Monday to Friday). By comparison, a standard PL or Dulux lamp only lasts 10,000 hours. For extra peace of mind, an all-in Any-lamp.co.uk warranty of 3 Years is included too. Cool White Light A high Kelvin value means a cool colour. This PL-C LED Lamp has a color temperature of 4000K and therefore gives cool white light. This light colour helps to keep people focused and alert. That\'s why it is very suitable for the illumination of public places like hallways and offices. Which ballast do I need? A 4-pin energy-saving lamp works with an electronic (HF) ballast. This ensures that the correct amount of electricity reaches the LED PL-C Lamp. In that way you have instant light and no flickering. Install and save with ease Switch off the power and remove the old PL or Dulux lamp from the fixture. Install the new LED bulb Switch the power back on and start saving on energy costs! Don't forget to hand in your old energy-saving bulbs for recycling.