I have some old fluorescent tubes. What does the "G13" or "G23" base mean, and can I replace them with LED equivalents?

The “G” followed by a number such as "13" or "23" indicates a bi-pin connector specifically designed for fluorescent tubes. These include types that require different mounting types in some fixtures. Often, you can find LED equivalents designed with the same base type and mounting styles for easy replacements. Ensure the voltage and physical size match so your new bulb works safely.

Which light bulb base type do I need?

To determine the right light bulb, identify the base type by checking the existing bulb or the fixture. We carry base types such as <a href="https://www.homedepot.com/b/Lighting-Light-Bulbs/Feit-Electric/Bi-Pin/T3/N-5yc1vZbmbuZ3zeZ1z0tnc5Z1z0vvrn?emt=plpfaq_2504_lightbulbs" style="text-decoration: underline;">bi-pin</a>, <a href="https://www.homedepot.com/b/Lighting-Light-Bulbs/Feit-Electric/Recessed-Double-Contact/T3/N-5yc1vZbmbuZ3zeZ1z0vvrnZ1z21np7?emt=plpfaq_2504_lightbulbs" style="text-decoration: underline;">recessed double contact</a>, and <a href="https://www.homedepot.com/b/Lighting-Light-Bulbs/Feit-Electric/RSC/T3/N-5yc1vZbmbuZ3zeZ1z0vvrnZ1z21mj8?emt=plpfaq_2504_lightbulbs" style="text-decoration: underline;">rsc</a>.

What are type A light bulbs, and why are they so common?

<a href="https://www.homedepot.com/b/Lighting-Light-Bulbs/Type-A/N-5yc1vZbmbuZ1z1dq82?emt=plpfaq_2504_lightbulbs" style="text-decoration: underline;">Type A light bulbs</a> are the classic, pear-shaped bulbs you're most likely familiar with. They fit standard medium-base sockets and are widely used in lamps and fixtures throughout homes. Their popularity stems from their versatility, affordability, and compatibility with most everyday lighting setups, making them a reliable choice for general illumination.