A-shaped bulbs are one of the most popular bulbs used in the home. They are so popular, the A-shape is probably what comes to mind when someone says light bulb. To tell the difference between one A-shaped bulb and another, the bulbs are classified based on their diameter.
A19 bulbs are the most standard size used in households. Their A-shape and medium sized diameter make them popular for use in lamps and ceiling fixtures. They can fit just about anywhere making them versatile and useful in places like restaurants, retail outlets, and homes.
A19 bulbs come in the traditional A-shape, making them easy to install. They typically stay between 4”-5” long and have a diameter of 2.4”, perfect for ceiling fixtures and lamps.
Benefits of A19 LED Light Bulbs
As with any light bulb style, A19 bulbs are available in a variety of wattages, color temperatures, bases, and lumens. Many LED A19 bulbs are dimmable, which means they can be used with compatible dimmer switches. Dimmable bulbs are a great way to change the atmosphere in the room without having to change the lightbulb.
Compared specifically to CFLs, LED bulbs are more durable. A-shaped LED bulbs are also typically smaller than CFLs, making them suitable for more applications.
One unique option is smart A19 bulbs which can be dimmed using an app and can be controlled remotely. There are also different outward appearances to A19 bulbs aside from the light emitted. Choose from clear, frosted and amber styles depending on how you like the bulb to look when it’s not lit.
Types of A-Shaped Light Bulbs
To tell the difference between one A-shaped bulb and another, the bulbs are classified based on their diameter. For example, though you could find one A19 bulb that is 4” long and another that is 3”, both would have the same diameter. Because A-shaped bulbs have so many applications, there is sure to be one that fits your needs.
A19
The A19 is the most commonly used A-shaped bulb. From lamps to ceiling fixtures, bathroom vanities to sconces, and so much more, there’s a use for A19 bulbs in every room of your house. The A19’s diameter is approximately 2.4 inches.
A15
With a diameter of 1.875 inches, A15 bulbs are the smallest of the A-shaped family. Their most popular use is in signs and decorative lighting.
A21
After A19, A21 bulbs are the next most popular choice. With a diameter of about 2.6 inches, they are just slightly wider than A19 bulbs. Because of this similarity, A21 bulbs can be found in most of the same places A19s are, with their most popular use being around the home.
A23
A23 bulbs are the largest of the A-shaped bulbs with a diameter of 2.875 inches. An A23 bulb typically has higher wattage than other A-shaped bulbs. This higher wattage makes the A23 a good choice for commercial uses that call for the traditional A-shape.
A25
A25 bulbs are the largest of the A-shaped bulbs with a diameter of 3.7 inches. An A25 bulb typically has a built-in heatsink for better heat dissipation than other A-shaped bulbs. This feature makes the A25 a good choice for commercial uses that call for the traditional A-shape.
