CFL Sizes and Shapes
The ENERGY STAR CFL search can help you find a specific bulb to meet your needs or see if a particular model is qualified.
For specialty bulbs not common in stores, find model numbers through the search tool, and then use your favorite search engine to find the model online.
Remember:
- Only bulbs marked "dimmable" will work on dimmer switches.
- Only bulbs marked "three-way" will work on three-way sockets.
- Most photocells and electric timers don’t work with CFLs, so check with the manufacturer of the control for compatibility.