The A refers to the bulb shape. A is for arbitrary and is the shape that we all think of when we envision a light bulb (C is for candle, G is for Globe, etc.) The number 19 designates the size.

Wondering how to remove that broken light bulb base? This guide will tell you how to safely deal with the accident. Taylor Martin has covered technology online for over six years. He has reviewed ...

— Recommendations are independently chosen by Reviewed’s editors. Purchases you make through the links below may earn us and our publishing partners a commission. Home lighting—it can make or break a ...

Buying a light bulb can be complicated. If you don't take the time to figure out what type of bulb you need, it may not match the color of the other bulbs in the room or even work in your fixture.