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What Does 1/8" Have to do With Bulbs Anyway?

HOW DO I MEASURE MY LIGHT BULB?

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Bulb sizing is very straightforward:

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All bulbs are based on the diameter of the bulb at its widest point, measured in eighths of an inch (â…›”)

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Some Examples:

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The designation “T12” indicates a tubular bulb that measures 12 eighths of an inch (12/8”) in diameter (or 1-½” wide/around)

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The designation “T8″ indicates a tubular bulb that measures 8 eights of an inch (8/8″) in diameter (or 1” wide/round)

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The designation “T5″ indicates a tubular bulb that measures 5 eights of an inch (5/8”) in diameter 

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The designation “Par38″ indicates 38 eights of an inch (38/8″) in diameter (or 4.75” wide)

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The designation “A19″ of the most common household bulb indicates 19 eights of an inch (19/8″) in diameter (2-3/8” wide)

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WHOLESALE

1415 Spar Avenue, Anchorage
(907)272-2259

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WASILLA

121 W. Parks Highway, Wasilla
(907)376-6548

FAIRBANKS

1715 College Road, Fairbanks
(907)451-9110

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SOLDOTNA

43531A Kalifornsky Beach Rd, Soldotna
(907)262-2121

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