How big is a par 20 bulb?

Updated: 12/20/2022
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11y ago

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The PAR stands for Parabolic Aluminized Reflector.

The number 20 indicates the number of 1/8 inch increments of size.

Therefore the diameter of the large end of the bulb is 2-1/2 inches.

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Q: How big is a par 20 bulb?
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