Given that we really only sell projector headlights for the 2009 to 2014 F150s, it might be helpful if you actually know what the heck that even means. 2009 to 2012 F150s came from the factory with a pretty basic reflector headlight design. Reflector headlights are your basic and standard headlight design that goes back to the Model T. These headlights feature a bulb situated in a housing lined with mirrored reflectors that are angled to send light out of the headlight lens over a wide area. These headlights are very simple and inexpensive, but they don't really use the light from your bulbs very effectively.
Our selection of aftermarket headlights use a low-beam projector design which basically acts like a lens within your headlight lens to provide more effective use of your truck's headlight bulb. At its most basic, projector lenses consist of a bulb in a housing surrounded by reflectors (much like a standard reflector headlight). This time, light that bounces off the reflectors is then refocused through a specialized lens that creates a more streamlined and intense beam of light. Because the light coming through doesn't just scatter everywhere, projector headlights are a much better option for use with HID kits that dramatically increase light output.