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With just under 250 downlights available to purchase on Light Bulb World, we understand that too much choice can sometimes be overwhelming. Well, don’t worry because we’re here to help with this handy guide. We’ll help you understand the different types...

The base of a light bulb (also known as the cap) ensures that the correct bulb type is used in a light fitting. There are a large number of caps now used, both commercially and in domestic situations.