What is MOL?
MOL refers to MAXIMUM OVERALL LENGTH.
MOL is Maximum Overall Length measurement.
MOL of bulb is measured from top of bulb to bottom of Bulb base (or bottom of pins.) Exception is if bulb has flexible wire leads, then measurement does NOT include the length of wires.
Actual bulb is likely shorter (sometimes much, much shorter) than the MOL industry standard specification.
references for this page: MAXIMUM OVERALL LENGTH, MOL