Incredible Different Size Light Bulbs References. There are many types of light options. They are differentiated by the e size, which is a reference to their size in millimeters.

Web understand the different light bulbs, sizes and types with these quick and easy tips. Light bulbs are identified by the diameter, length, shape, and screw type. These bulbs fit into a recessed or can fixture mounted in the ceiling or an exterior flood light and can be flat or rounded at the top but the shape varies widely.