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Chapter 3 Bar Codes
Figure 19. POSTNET Structure (Vertical Bar)
Return Address Area Postage Area
1/2"
1/2"
CODE
CODE
START
STOP
STARTING
POSITION
CHECK DIGIT
ZONE
QUIET
QUIET
ADDRESS BLOCK BAR CODE READ AREA
4"
BAR
CODE
DATA
FIELD
ZONE
NOTE: Illustration is not to scale.
