9 watt Twin Tube Compact Fluorescent Light Bulbs - 2 Pin - 3500K
9 watt twin tube compact fluorescent light bulbs with 2-pin with 3500K color have two tubes coming out of the base connecting them at the top. They have two pins on either size of the plastic end. 3500K is a neutral white color. These plug-in compact fluorescents have been used in recessed lighting, general lighting, security, exit sign and a variety of other applications. Sometimes these are also called twin tube, Biax or PL lamps. - 9 watts. - 3500K neutral white.- 580 lumens.- 10,000 hours.- G23 2 pin base.- 6.5 inch length. - 2 pins. - Made for a specific ballast and socket requiring this lamp. - Dulux, PL, biax are some ways it is designated.