I'm looking for a tubular bulb for my fixture, and I see "T8," "T5," and "T12" listed. What do these "T" numbers mean, and how do they differ?

The "T" in these codes indicates a tubular shape, often used for fluorescent or LED tubes, and the number represents the tube diameter in eighths of an inch; thus, a <a href="https://www.homedepot.com/b/Lighting-Light-Bulbs/T8/N-5yc1vZbmbuZ1z0vvri?emt=plpfaq_2504_lightbulbs" style="text-decoration: underline;">T8 bulb</a> is 1 inch in diameter, while a <a href="https://www.homedepot.com/b/Lighting-Light-Bulbs/T5/N-5yc1vZbmbuZ1z0vvq7?emt=plpfaq_2504_lightbulbs" style="text-decoration: underline;">T5 bulb</a> is 5/8 of an inch, and a <a href="https://www.homedepot.com/b/Lighting-Light-Bulbs/T12/N-5yc1vZbmbuZ1z0vvrc?emt=plpfaq_2504_lightbulbs" style="text-decoration: underline;">T12</a> is 12/8 of an inch (or 1.5 inches), with the smaller diameter often correlating to newer, more energy-efficient models. Choose the correct number that matches the socket in your fixture.

Does The Home Depot have different EcoSmart light bulb shapes?

Yes! We offer a variety of bulb shapes, including <a href="https://www.homedepot.com/b/Lighting-Light-Bulbs/EcoSmart/A-Style/3-way/N-5yc1vZbmbuZ4b8Z1z0u4wkZ1z2348t?emt=plpfaq_2504_lightbulbs" style="text-decoration: underline;">a-style</a> and <a href="https://www.homedepot.com/b/Lighting-Light-Bulbs/EcoSmart/Reflector/3-way/N-5yc1vZbmbuZ4b8Z1z0u4wkZ1z132nb?emt=plpfaq_2504_lightbulbs" style="text-decoration: underline;">reflector</a>.

I love the vintage look. Are Edison bulbs a good choice for general lighting?

<a href="https://www.homedepot.com/b/Lighting-Light-Bulbs-Edison-Bulbs/N-5yc1vZ2fkol7b?catStyle=ShowProducts?emt=plpfaq_2504_lightbulbs" style="text-decoration: underline;">Edison bulbs</a> are fantastic for adding a warm, decorative touch to your home with their visible filament design and amber glow. Still, they're generally not the most efficient choice for primary lighting due to their lower lumen output. Consider using them in fixtures where the aesthetic is as important as the illumination.