Lights of America 30W compact fluorescent cicle light (2630C) Lights Of America 30W Compact Fluorescent Circle Light with Adapter (2630C) This is a very bright bulb great for indoors and outdoors This bulb does not dim but is great in a bathroom you would only need one to brighten the whole room The life span is 6000 and the size is 9" x 3.5" and the Lumens is 2900K Easy to install all you do is screw it in