There are typically 4 different PAR LED bulbs to choose from. These include:
The number on the PAR bulb is the diameter of the bulb. The measurement is done in eighths of an inch. Other types of PAR bulbs are PAR16 and PAR56 bulbs. These are less common than the other ones, however.
No, PAR LED Bulbs do not produce the same amount of light. Depending on the bulb, the wattage and brightness will be different. They typically range from 35 to 120 watts. The different sizes of PAR bulbs is another reason the same amount of light is not emitted from the bulbs.