Light Bulb Size Chart. G24 is an attack on two pins as shown in the picture that is easy to find in commercial applications. The most common size is R20 and if you are willing to buy one of these bulbs you can go for either Incandescent CFL or LED technology.
C9 E17 Intermediate Base Bulbs. You can even use this chart as a lamp socket chart. Such as retail offices and open areas to the public and warehouses offices supermarkets and hotels.
It is used in most incandescent nostalgic LED CFL and halogen light bulbs.
For sale online in the shop you can buy 11W CORN G24 for interiors. Your standard household bulb size. This is why you will often see long T8 lighting in 4 foot light tubes 6 feet and 8 feet lengths. Most of the light bulbs that you buy in stores or online are going to have this kind of base.