2D 55 watt light bulbs with 3500K are different from circular bulbs in that they have a more rectangular shape. If you have a light fixture that has these, you won't be able to use any other kind of light bulb in it's place. It's a really unique light bulb and comes in several wattage although the wattage are not interchangeable. The color is a neutral white color temperature appearance so it works well in homes and businesses that want something that's close to an incandescent lighted appearance. It's used in many light fixtures that have a low profile and people want to keep them out of the way whether it be a ceiling or wall mount situation. The 4 pin socket connection is unique and is only to be used with this type of bulb.

Product features:
- 55 watts.
- 3500K neutral white color.
- 10,000 hours.

- GRY10Q base.
- 4 pin socket connection.
- Operates on an electronic ballast.