If you been shopping for Edison bulbs you most probably have seen those shape code numbers in the bulb's description. For example ST18, ST58, ST21, ST64, G25, G30, G40, A19, A21, and A23. What do those codes mean?
As we approach 8 years of selling vintage Edison bulbs I can tell you the two most important and most asked questions about Edison Bulbs. These important facts are also the main reason customers return them or unhappy with them.
What you must know before buying Incandescent Edison Light Bulbs:
Edison light bulbs are reproduction bulbs which are made to look like the first light bulbs introduced by Thomas Edison over 100 years ago. They are incandescent bulbs with filaments and lens (Glass) which are shaped like the original Edison bulbs.