4-Pin Inline Plug In Compact Fluorescent Light Bulbs - Twin Tube
4-pin inline plug in compact fluorescent of the twin tube variation have been used in recessed lighting, exit sign and a variety of other applications. Sometimes these are also called Dulux S, Biax or PL lamps. Compact fluorescent plug-in light bulbs are an energy efficient light source for recessed and various commercial light fixtures. These have a dedicated inline row plug-in base that is operated on a specific ballast for that wattage and size.