A-Shape ("Arbitrary") A15 LED bulbs or general service bulbs are likely the light bulb we are all most familiar with. A15 light bulbs are slightly smaller than A19 light bulbs and typically come in outputs ranging from 10 watts to 40 watts in their incandescent forms.
A15 LED Bulb Replacements: A15 LED bulbs recently started to appear on scene a few years ago. The primary target for these are in applications where A15 bulbs are used such as appliances, signage and decorative lighting.
Buyers purchasing A15 bulbs for appliances should note LED bulbs are not to be used inside ovens or microwaves however, they work perfectly in refrigerators!