Bulb Shape Code

2-Pin PL
A19
A21
B11
C7
C9
Corn
G25
High Bay
MR16
PAR20
PAR30 Long Neck
PAR30 Short Neck
PAR38
PL-L
R30/BR30
R40/BR40
T4
T5
T6.5
T8
T8 U-bend
Wall Pack/Shoebox