What is the difference between an ed17 and ed28 bulb?

The primary difference between an ED17 and an ED28 bulb lies in their size and application. The ED17 bulb has a diameter of 2.12 inches (17 eighths of an inch), while the ED28 bulb has a diameter of 3.5 inches (28 eighths of an inch). This size difference affects their light output and suitability for various fixtures; ED17 bulbs are typically used in smaller applications, whereas ED28 bulbs are suited for larger lighting needs, such as high-output commercial or industrial settings.