2D, a trademark of GE Lighting, designates a fluorescent bulb shape that is used in applications similar to circle or circline shaped bulbs. Available base options include medium screw base, 2-pin and 4-pin plug-in. Topbulb has a wide array of 2D compact fluorescent bulbs. Find your 2D compact fluorescent bulb easier by using our filtering options. If you don't see what you are looking for in the offerings below, call 800.867.2852 or click the 'Live Help' button above to speak with a lighting specialist. In most cases, we can find the 2D compact fluorescent bulb for you at a competitive price.